21572580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1399}}^1$

素因数の和:1668

約数の個数: 48

約数和(自身を含む): 60681600

約数和(自身を除く): 39109020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1399, 1542, 2570, 2798, 3084, 3855, 4197, 5140, 5596, 6995, 7710, 8394, 13990, 15420, 16788, 20985, 27980, 41970, 83940, 359543, 719086, 1078629, 1438172, 1797715, 2157258, 3595430, 4314516, 5393145, 7190860, 10786290, 21572580]

約数ペア:

[(1, 21572580), (2, 10786290), (3, 7190860), (4, 5393145), (5, 4314516), (6, 3595430), (10, 2157258), (12, 1797715), (15, 1438172), (20, 1078629), (30, 719086), (60, 359543), (257, 83940), (514, 41970), (771, 27980), (1028, 20985), (1285, 16788), (1399, 15420), (1542, 13990), (2570, 8394), (2798, 7710), (3084, 6995), (3855, 5596), (4197, 5140)]