21912540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2161}}^1$

素因数の和:2199

約数の個数: 72

約数和(自身を含む): 66468528

約数和(自身を除く): 44555988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2161, 2535, 3380, 4322, 5070, 6483, 8644, 10140, 10805, 12966, 21610, 25932, 28093, 32415, 43220, 56186, 64830, 84279, 112372, 129660, 140465, 168558, 280930, 337116, 365209, 421395, 561860, 730418, 842790, 1095627, 1460836, 1685580, 1826045, 2191254, 3652090, 4382508, 5478135, 7304180, 10956270, 21912540]

約数ペア:

[(1, 21912540), (2, 10956270), (3, 7304180), (4, 5478135), (5, 4382508), (6, 3652090), (10, 2191254), (12, 1826045), (13, 1685580), (15, 1460836), (20, 1095627), (26, 842790), (30, 730418), (39, 561860), (52, 421395), (60, 365209), (65, 337116), (78, 280930), (130, 168558), (156, 140465), (169, 129660), (195, 112372), (260, 84279), (338, 64830), (390, 56186), (507, 43220), (676, 32415), (780, 28093), (845, 25932), (1014, 21610), (1690, 12966), (2028, 10805), (2161, 10140), (2535, 8644), (3380, 6483), (4322, 5070)]