256508512

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 192

約数和(自身を含む): 640120320

約数和(自身を除く): 383611808

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 23, 26, 32, 34, 38, 46, 52, 68, 76, 83, 92, 104, 136, 152, 166, 184, 208, 221, 247, 272, 299, 304, 323, 332, 368, 391, 416, 437, 442, 494, 544, 598, 608, 646, 664, 736, 782, 874, 884, 988, 1079, 1196, 1292, 1328, 1411, 1564, 1577, 1748, 1768, 1909, 1976, 2158, 2392, 2584, 2656, 2822, 3128, 3154, 3496, 3536, 3818, 3952, 4199, 4316, 4784, 5083, 5168, 5644, 5681, 6256, 6308, 6992, 7072, 7429, 7636, 7904, 8398, 8632, 9568, 10166, 10336, 11288, 11362, 12512, 12616, 13984, 14858, 15272, 16796, 17264, 18343, 20332, 20501, 22576, 22724, 24817, 25232, 26809, 29716, 30544, 32453, 33592, 34528, 36271, 36686, 40664, 41002, 45152, 45448, 49634, 50464, 53618, 59432, 61088, 64906, 67184, 72542, 73372, 81328, 82004, 90896, 96577, 99268, 107236, 118864, 129812, 134368, 145084, 146744, 162656, 164008, 181792, 193154, 198536, 214472, 237728, 259624, 290168, 293488, 328016, 348517, 386308, 397072, 421889, 428944, 471523, 519248, 580336, 586976, 616607, 656032, 697034, 772616, 794144, 843778, 857888, 943046, 1038496, 1160672, 1233214, 1394068, 1545232, 1687556, 1886092, 2466428, 2788136, 3090464, 3375112, 3772184, 4932856, 5576272, 6750224, 7544368, 8015891, 9865712, 11152544, 13500448, 15088736, 16031782, 19731424, 32063564, 64127128, 128254256, 256508512]

約数ペア:

[(1, 256508512), (2, 128254256), (4, 64127128), (8, 32063564), (13, 19731424), (16, 16031782), (17, 15088736), (19, 13500448), (23, 11152544), (26, 9865712), (32, 8015891), (34, 7544368), (38, 6750224), (46, 5576272), (52, 4932856), (68, 3772184), (76, 3375112), (83, 3090464), (92, 2788136), (104, 2466428), (136, 1886092), (152, 1687556), (166, 1545232), (184, 1394068), (208, 1233214), (221, 1160672), (247, 1038496), (272, 943046), (299, 857888), (304, 843778), (323, 794144), (332, 772616), (368, 697034), (391, 656032), (416, 616607), (437, 586976), (442, 580336), (494, 519248), (544, 471523), (598, 428944), (608, 421889), (646, 397072), (664, 386308), (736, 348517), (782, 328016), (874, 293488), (884, 290168), (988, 259624), (1079, 237728), (1196, 214472), (1292, 198536), (1328, 193154), (1411, 181792), (1564, 164008), (1577, 162656), (1748, 146744), (1768, 145084), (1909, 134368), (1976, 129812), (2158, 118864), (2392, 107236), (2584, 99268), (2656, 96577), (2822, 90896), (3128, 82004), (3154, 81328), (3496, 73372), (3536, 72542), (3818, 67184), (3952, 64906), (4199, 61088), (4316, 59432), (4784, 53618), (5083, 50464), (5168, 49634), (5644, 45448), (5681, 45152), (6256, 41002), (6308, 40664), (6992, 36686), (7072, 36271), (7429, 34528), (7636, 33592), (7904, 32453), (8398, 30544), (8632, 29716), (9568, 26809), (10166, 25232), (10336, 24817), (11288, 22724), (11362, 22576), (12512, 20501), (12616, 20332), (13984, 18343), (14858, 17264), (15272, 16796)]