256945360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:130

約数の個数: 240

約数和(自身を含む): 761951232

約数和(自身を除く): 505005872

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 41, 56, 62, 70, 76, 80, 82, 95, 112, 124, 133, 140, 152, 155, 164, 190, 205, 217, 248, 266, 280, 287, 304, 310, 328, 361, 380, 410, 434, 496, 532, 560, 574, 589, 620, 656, 665, 722, 760, 779, 820, 868, 1064, 1085, 1148, 1178, 1240, 1271, 1330, 1435, 1444, 1520, 1558, 1640, 1736, 1805, 2128, 2170, 2296, 2356, 2480, 2527, 2542, 2660, 2870, 2888, 2945, 3116, 3280, 3472, 3610, 3895, 4123, 4340, 4592, 4712, 5054, 5084, 5320, 5453, 5740, 5776, 5890, 6232, 6355, 7220, 7790, 8246, 8680, 8897, 9424, 10108, 10168, 10640, 10906, 11191, 11480, 11780, 12464, 12635, 12710, 14440, 14801, 15580, 16492, 17360, 17794, 20216, 20336, 20615, 21812, 22382, 22960, 23560, 24149, 25270, 25420, 27265, 28880, 29602, 31160, 32984, 35588, 40432, 41230, 43624, 44485, 44764, 47120, 48298, 50540, 50840, 54530, 55955, 59204, 62320, 65968, 71176, 74005, 78337, 82460, 87248, 88970, 89528, 96596, 101080, 101680, 103607, 109060, 111910, 118408, 120745, 142352, 148010, 156674, 164920, 169043, 177940, 179056, 193192, 202160, 207214, 218120, 223820, 236816, 241490, 296020, 313348, 329840, 338086, 355880, 386384, 391685, 414428, 436240, 447640, 458831, 482980, 518035, 592040, 626696, 676172, 711760, 783370, 828856, 845215, 895280, 917662, 965960, 1036070, 1184080, 1253392, 1352344, 1566740, 1657712, 1690430, 1835324, 1931920, 2072140, 2294155, 2704688, 3133480, 3211817, 3380860, 3670648, 4144280, 4588310, 6266960, 6423634, 6761720, 7341296, 8288560, 9176620, 12847268, 13523440, 16059085, 18353240, 25694536, 32118170, 36706480, 51389072, 64236340, 128472680, 256945360]

約数ペア:

[(1, 256945360), (2, 128472680), (4, 64236340), (5, 51389072), (7, 36706480), (8, 32118170), (10, 25694536), (14, 18353240), (16, 16059085), (19, 13523440), (20, 12847268), (28, 9176620), (31, 8288560), (35, 7341296), (38, 6761720), (40, 6423634), (41, 6266960), (56, 4588310), (62, 4144280), (70, 3670648), (76, 3380860), (80, 3211817), (82, 3133480), (95, 2704688), (112, 2294155), (124, 2072140), (133, 1931920), (140, 1835324), (152, 1690430), (155, 1657712), (164, 1566740), (190, 1352344), (205, 1253392), (217, 1184080), (248, 1036070), (266, 965960), (280, 917662), (287, 895280), (304, 845215), (310, 828856), (328, 783370), (361, 711760), (380, 676172), (410, 626696), (434, 592040), (496, 518035), (532, 482980), (560, 458831), (574, 447640), (589, 436240), (620, 414428), (656, 391685), (665, 386384), (722, 355880), (760, 338086), (779, 329840), (820, 313348), (868, 296020), (1064, 241490), (1085, 236816), (1148, 223820), (1178, 218120), (1240, 207214), (1271, 202160), (1330, 193192), (1435, 179056), (1444, 177940), (1520, 169043), (1558, 164920), (1640, 156674), (1736, 148010), (1805, 142352), (2128, 120745), (2170, 118408), (2296, 111910), (2356, 109060), (2480, 103607), (2527, 101680), (2542, 101080), (2660, 96596), (2870, 89528), (2888, 88970), (2945, 87248), (3116, 82460), (3280, 78337), (3472, 74005), (3610, 71176), (3895, 65968), (4123, 62320), (4340, 59204), (4592, 55955), (4712, 54530), (5054, 50840), (5084, 50540), (5320, 48298), (5453, 47120), (5740, 44764), (5776, 44485), (5890, 43624), (6232, 41230), (6355, 40432), (7220, 35588), (7790, 32984), (8246, 31160), (8680, 29602), (8897, 28880), (9424, 27265), (10108, 25420), (10168, 25270), (10640, 24149), (10906, 23560), (11191, 22960), (11480, 22382), (11780, 21812), (12464, 20615), (12635, 20336), (12710, 20216), (14440, 17794), (14801, 17360), (15580, 16492)]