25429640

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1249}}^1$

素因数の和:1769

約数の個数: 32

約数和(自身を含む): 57375000

約数和(自身を除く): 31945360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 1249, 2036, 2498, 2545, 4072, 4996, 5090, 6245, 9992, 10180, 12490, 20360, 24980, 49960, 635741, 1271482, 2542964, 3178705, 5085928, 6357410, 12714820, 25429640]

約数ペア:

[(1, 25429640), (2, 12714820), (4, 6357410), (5, 5085928), (8, 3178705), (10, 2542964), (20, 1271482), (40, 635741), (509, 49960), (1018, 24980), (1249, 20360), (2036, 12490), (2498, 10180), (2545, 9992), (4072, 6245), (4996, 5090)]