2155920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1$

素因数の和:720

約数の個数: 80

約数和(自身を含む): 7207872

約数和(自身を除く): 5051952

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 691, 780, 1040, 1382, 1560, 2073, 2764, 3120, 3455, 4146, 5528, 6910, 8292, 8983, 10365, 11056, 13820, 16584, 17966, 20730, 26949, 27640, 33168, 35932, 41460, 44915, 53898, 55280, 71864, 82920, 89830, 107796, 134745, 143728, 165840, 179660, 215592, 269490, 359320, 431184, 538980, 718640, 1077960, 2155920]

約数ペア:

[(1, 2155920), (2, 1077960), (3, 718640), (4, 538980), (5, 431184), (6, 359320), (8, 269490), (10, 215592), (12, 179660), (13, 165840), (15, 143728), (16, 134745), (20, 107796), (24, 89830), (26, 82920), (30, 71864), (39, 55280), (40, 53898), (48, 44915), (52, 41460), (60, 35932), (65, 33168), (78, 27640), (80, 26949), (104, 20730), (120, 17966), (130, 16584), (156, 13820), (195, 11056), (208, 10365), (240, 8983), (260, 8292), (312, 6910), (390, 5528), (520, 4146), (624, 3455), (691, 3120), (780, 2764), (1040, 2073), (1382, 1560)]