20025880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1933}}^1$

素因数の和:1988

約数の個数: 64

約数和(自身を含む): 52914240

約数和(自身を除く): 32888360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1933, 2072, 2590, 3866, 5180, 7732, 9665, 10360, 13531, 15464, 19330, 27062, 38660, 54124, 67655, 71521, 77320, 108248, 135310, 143042, 270620, 286084, 357605, 500647, 541240, 572168, 715210, 1001294, 1430420, 2002588, 2503235, 2860840, 4005176, 5006470, 10012940, 20025880]

約数ペア:

[(1, 20025880), (2, 10012940), (4, 5006470), (5, 4005176), (7, 2860840), (8, 2503235), (10, 2002588), (14, 1430420), (20, 1001294), (28, 715210), (35, 572168), (37, 541240), (40, 500647), (56, 357605), (70, 286084), (74, 270620), (140, 143042), (148, 135310), (185, 108248), (259, 77320), (280, 71521), (296, 67655), (370, 54124), (518, 38660), (740, 27062), (1036, 19330), (1295, 15464), (1480, 13531), (1933, 10360), (2072, 9665), (2590, 7732), (3866, 5180)]