21011952

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{223}}^1$

素因数の和:398

約数の個数: 80

約数和(自身を含む): 59107328

約数和(自身を除く): 38095376

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 151, 156, 208, 223, 302, 312, 446, 453, 604, 624, 669, 892, 906, 1208, 1338, 1784, 1812, 1963, 2416, 2676, 2899, 3568, 3624, 3926, 5352, 5798, 5889, 7248, 7852, 8697, 10704, 11596, 11778, 15704, 17394, 23192, 23556, 31408, 33673, 34788, 46384, 47112, 67346, 69576, 94224, 101019, 134692, 139152, 202038, 269384, 404076, 437749, 538768, 808152, 875498, 1313247, 1616304, 1750996, 2626494, 3501992, 5252988, 7003984, 10505976, 21011952]

約数ペア:

[(1, 21011952), (2, 10505976), (3, 7003984), (4, 5252988), (6, 3501992), (8, 2626494), (12, 1750996), (13, 1616304), (16, 1313247), (24, 875498), (26, 808152), (39, 538768), (48, 437749), (52, 404076), (78, 269384), (104, 202038), (151, 139152), (156, 134692), (208, 101019), (223, 94224), (302, 69576), (312, 67346), (446, 47112), (453, 46384), (604, 34788), (624, 33673), (669, 31408), (892, 23556), (906, 23192), (1208, 17394), (1338, 15704), (1784, 11778), (1812, 11596), (1963, 10704), (2416, 8697), (2676, 7852), (2899, 7248), (3568, 5889), (3624, 5798), (3926, 5352)]