21009560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3673}}^1$

素因数の和:3708

約数の個数: 64

約数和(自身を含む): 55550880

約数和(自身を除く): 34541320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3673, 5720, 7346, 14692, 18365, 29384, 36730, 40403, 47749, 73460, 80806, 95498, 146920, 161612, 190996, 202015, 238745, 323224, 381992, 404030, 477490, 525239, 808060, 954980, 1050478, 1616120, 1909960, 2100956, 2626195, 4201912, 5252390, 10504780, 21009560]

約数ペア:

[(1, 21009560), (2, 10504780), (4, 5252390), (5, 4201912), (8, 2626195), (10, 2100956), (11, 1909960), (13, 1616120), (20, 1050478), (22, 954980), (26, 808060), (40, 525239), (44, 477490), (52, 404030), (55, 381992), (65, 323224), (88, 238745), (104, 202015), (110, 190996), (130, 161612), (143, 146920), (220, 95498), (260, 80806), (286, 73460), (440, 47749), (520, 40403), (572, 36730), (715, 29384), (1144, 18365), (1430, 14692), (2860, 7346), (3673, 5720)]