81228840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:240

約数の個数: 256

約数和(自身を含む): 311040000

約数和(自身を除く): 229811160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 59, 60, 66, 70, 77, 84, 88, 105, 110, 118, 120, 132, 140, 149, 154, 165, 168, 177, 210, 220, 231, 236, 264, 280, 295, 298, 308, 330, 354, 385, 413, 420, 440, 447, 462, 472, 590, 596, 616, 649, 660, 708, 745, 770, 826, 840, 885, 894, 924, 1043, 1155, 1180, 1192, 1239, 1298, 1320, 1416, 1490, 1540, 1639, 1652, 1770, 1788, 1848, 1947, 2065, 2086, 2235, 2310, 2360, 2478, 2596, 2980, 3080, 3129, 3245, 3278, 3304, 3540, 3576, 3894, 4130, 4172, 4470, 4543, 4620, 4917, 4956, 5192, 5215, 5960, 6195, 6258, 6490, 6556, 7080, 7788, 8195, 8260, 8344, 8791, 8940, 9086, 9240, 9735, 9834, 9912, 10430, 11473, 12390, 12516, 12980, 13112, 13629, 15576, 15645, 16390, 16520, 17582, 17880, 18172, 19470, 19668, 20860, 22715, 22946, 24585, 24780, 25032, 25960, 26373, 27258, 31290, 32780, 34419, 35164, 36344, 38940, 39336, 41720, 43955, 45430, 45892, 49170, 49560, 52746, 54516, 57365, 61537, 62580, 65560, 68145, 68838, 70328, 77880, 87910, 90860, 91784, 96701, 98340, 105492, 109032, 114730, 123074, 125160, 131865, 136290, 137676, 172095, 175820, 181720, 184611, 193402, 196680, 210984, 229460, 246148, 263730, 272580, 275352, 290103, 307685, 344190, 351640, 369222, 386804, 458920, 483505, 492296, 527460, 545160, 580206, 615370, 676907, 688380, 738444, 773608, 923055, 967010, 1054920, 1160412, 1230740, 1353814, 1376760, 1450515, 1476888, 1846110, 1934020, 2030721, 2320824, 2461480, 2707628, 2901030, 3384535, 3692220, 3868040, 4061442, 5415256, 5802060, 6769070, 7384440, 8122884, 10153605, 11604120, 13538140, 16245768, 20307210, 27076280, 40614420, 81228840]

約数ペア:

[(1, 81228840), (2, 40614420), (3, 27076280), (4, 20307210), (5, 16245768), (6, 13538140), (7, 11604120), (8, 10153605), (10, 8122884), (11, 7384440), (12, 6769070), (14, 5802060), (15, 5415256), (20, 4061442), (21, 3868040), (22, 3692220), (24, 3384535), (28, 2901030), (30, 2707628), (33, 2461480), (35, 2320824), (40, 2030721), (42, 1934020), (44, 1846110), (55, 1476888), (56, 1450515), (59, 1376760), (60, 1353814), (66, 1230740), (70, 1160412), (77, 1054920), (84, 967010), (88, 923055), (105, 773608), (110, 738444), (118, 688380), (120, 676907), (132, 615370), (140, 580206), (149, 545160), (154, 527460), (165, 492296), (168, 483505), (177, 458920), (210, 386804), (220, 369222), (231, 351640), (236, 344190), (264, 307685), (280, 290103), (295, 275352), (298, 272580), (308, 263730), (330, 246148), (354, 229460), (385, 210984), (413, 196680), (420, 193402), (440, 184611), (447, 181720), (462, 175820), (472, 172095), (590, 137676), (596, 136290), (616, 131865), (649, 125160), (660, 123074), (708, 114730), (745, 109032), (770, 105492), (826, 98340), (840, 96701), (885, 91784), (894, 90860), (924, 87910), (1043, 77880), (1155, 70328), (1180, 68838), (1192, 68145), (1239, 65560), (1298, 62580), (1320, 61537), (1416, 57365), (1490, 54516), (1540, 52746), (1639, 49560), (1652, 49170), (1770, 45892), (1788, 45430), (1848, 43955), (1947, 41720), (2065, 39336), (2086, 38940), (2235, 36344), (2310, 35164), (2360, 34419), (2478, 32780), (2596, 31290), (2980, 27258), (3080, 26373), (3129, 25960), (3245, 25032), (3278, 24780), (3304, 24585), (3540, 22946), (3576, 22715), (3894, 20860), (4130, 19668), (4172, 19470), (4470, 18172), (4543, 17880), (4620, 17582), (4917, 16520), (4956, 16390), (5192, 15645), (5215, 15576), (5960, 13629), (6195, 13112), (6258, 12980), (6490, 12516), (6556, 12390), (7080, 11473), (7788, 10430), (8195, 9912), (8260, 9834), (8344, 9735), (8791, 9240), (8940, 9086)]