128934200

素因数分解:

$2^3\times 5^2\times {\mathrm{644671}}^1$

素因数の和:644687

約数の個数: 24

約数和(自身を含む): 299772480

約数和(自身を除く): 170838280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 644671, 1289342, 2578684, 3223355, 5157368, 6446710, 12893420, 16116775, 25786840, 32233550, 64467100, 128934200]

約数ペア:

[(1, 128934200), (2, 64467100), (4, 32233550), (5, 25786840), (8, 16116775), (10, 12893420), (20, 6446710), (25, 5157368), (40, 3223355), (50, 2578684), (100, 1289342), (200, 644671)]