21004464

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:886

約数の個数: 80

約数和(自身を含む): 59933664

約数和(自身を除く): 38929200

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 41, 48, 52, 78, 82, 104, 123, 156, 164, 208, 246, 312, 328, 492, 533, 624, 656, 821, 984, 1066, 1599, 1642, 1968, 2132, 2463, 3198, 3284, 4264, 4926, 6396, 6568, 8528, 9852, 10673, 12792, 13136, 19704, 21346, 25584, 32019, 33661, 39408, 42692, 64038, 67322, 85384, 100983, 128076, 134644, 170768, 201966, 256152, 269288, 403932, 437593, 512304, 538576, 807864, 875186, 1312779, 1615728, 1750372, 2625558, 3500744, 5251116, 7001488, 10502232, 21004464]

約数ペア:

[(1, 21004464), (2, 10502232), (3, 7001488), (4, 5251116), (6, 3500744), (8, 2625558), (12, 1750372), (13, 1615728), (16, 1312779), (24, 875186), (26, 807864), (39, 538576), (41, 512304), (48, 437593), (52, 403932), (78, 269288), (82, 256152), (104, 201966), (123, 170768), (156, 134644), (164, 128076), (208, 100983), (246, 85384), (312, 67322), (328, 64038), (492, 42692), (533, 39408), (624, 33661), (656, 32019), (821, 25584), (984, 21346), (1066, 19704), (1599, 13136), (1642, 12792), (1968, 10673), (2132, 9852), (2463, 8528), (3198, 6568), (3284, 6396), (4264, 4926)]