21310440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{691}}^1$

素因数の和:962

約数の個数: 64

約数和(自身を含む): 64272960

約数和(自身を除く): 42962520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 257, 514, 691, 771, 1028, 1285, 1382, 1542, 2056, 2073, 2570, 2764, 3084, 3455, 3855, 4146, 5140, 5528, 6168, 6910, 7710, 8292, 10280, 10365, 13820, 15420, 16584, 20730, 27640, 30840, 41460, 82920, 177587, 355174, 532761, 710348, 887935, 1065522, 1420696, 1775870, 2131044, 2663805, 3551740, 4262088, 5327610, 7103480, 10655220, 21310440]

約数ペア:

[(1, 21310440), (2, 10655220), (3, 7103480), (4, 5327610), (5, 4262088), (6, 3551740), (8, 2663805), (10, 2131044), (12, 1775870), (15, 1420696), (20, 1065522), (24, 887935), (30, 710348), (40, 532761), (60, 355174), (120, 177587), (257, 82920), (514, 41460), (691, 30840), (771, 27640), (1028, 20730), (1285, 16584), (1382, 15420), (1542, 13820), (2056, 10365), (2073, 10280), (2570, 8292), (2764, 7710), (3084, 6910), (3455, 6168), (3855, 5528), (4146, 5140)]