20025740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{457}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 48320832

約数和(自身を除く): 28295092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 457, 626, 914, 1252, 1565, 1828, 2191, 2285, 3130, 3199, 4382, 4570, 6260, 6398, 8764, 9140, 10955, 12796, 15995, 21910, 31990, 43820, 63980, 143041, 286082, 572164, 715205, 1001287, 1430410, 2002574, 2860820, 4005148, 5006435, 10012870, 20025740]

約数ペア:

[(1, 20025740), (2, 10012870), (4, 5006435), (5, 4005148), (7, 2860820), (10, 2002574), (14, 1430410), (20, 1001287), (28, 715205), (35, 572164), (70, 286082), (140, 143041), (313, 63980), (457, 43820), (626, 31990), (914, 21910), (1252, 15995), (1565, 12796), (1828, 10955), (2191, 9140), (2285, 8764), (3130, 6398), (3199, 6260), (4382, 4570)]