20609680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:201

約数の個数: 160

約数和(自身を含む): 62496000

約数和(自身を除く): 41886320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 80, 91, 95, 104, 112, 130, 133, 140, 149, 152, 182, 190, 208, 247, 260, 266, 280, 298, 304, 364, 380, 455, 494, 520, 532, 560, 596, 665, 728, 745, 760, 910, 988, 1040, 1043, 1064, 1192, 1235, 1330, 1456, 1490, 1520, 1729, 1820, 1937, 1976, 2086, 2128, 2384, 2470, 2660, 2831, 2980, 3458, 3640, 3874, 3952, 4172, 4940, 5215, 5320, 5662, 5960, 6916, 7280, 7748, 8344, 8645, 9685, 9880, 10430, 10640, 11324, 11920, 13559, 13832, 14155, 15496, 16688, 17290, 19370, 19760, 19817, 20860, 22648, 27118, 27664, 28310, 30992, 34580, 36803, 38740, 39634, 41720, 45296, 54236, 56620, 67795, 69160, 73606, 77480, 79268, 83440, 99085, 108472, 113240, 135590, 138320, 147212, 154960, 158536, 184015, 198170, 216944, 226480, 257621, 271180, 294424, 317072, 368030, 396340, 515242, 542360, 588848, 736060, 792680, 1030484, 1084720, 1288105, 1472120, 1585360, 2060968, 2576210, 2944240, 4121936, 5152420, 10304840, 20609680]

約数ペア:

[(1, 20609680), (2, 10304840), (4, 5152420), (5, 4121936), (7, 2944240), (8, 2576210), (10, 2060968), (13, 1585360), (14, 1472120), (16, 1288105), (19, 1084720), (20, 1030484), (26, 792680), (28, 736060), (35, 588848), (38, 542360), (40, 515242), (52, 396340), (56, 368030), (65, 317072), (70, 294424), (76, 271180), (80, 257621), (91, 226480), (95, 216944), (104, 198170), (112, 184015), (130, 158536), (133, 154960), (140, 147212), (149, 138320), (152, 135590), (182, 113240), (190, 108472), (208, 99085), (247, 83440), (260, 79268), (266, 77480), (280, 73606), (298, 69160), (304, 67795), (364, 56620), (380, 54236), (455, 45296), (494, 41720), (520, 39634), (532, 38740), (560, 36803), (596, 34580), (665, 30992), (728, 28310), (745, 27664), (760, 27118), (910, 22648), (988, 20860), (1040, 19817), (1043, 19760), (1064, 19370), (1192, 17290), (1235, 16688), (1330, 15496), (1456, 14155), (1490, 13832), (1520, 13559), (1729, 11920), (1820, 11324), (1937, 10640), (1976, 10430), (2086, 9880), (2128, 9685), (2384, 8645), (2470, 8344), (2660, 7748), (2831, 7280), (2980, 6916), (3458, 5960), (3640, 5662), (3874, 5320), (3952, 5215), (4172, 4940)]