16668880

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1499}}^1$

素因数の和:1651

約数の個数: 40

約数和(自身を含む): 39060000

約数和(自身を除く): 22391120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1499, 2224, 2780, 2998, 5560, 5996, 7495, 11120, 11992, 14990, 23984, 29980, 59960, 119920, 208361, 416722, 833444, 1041805, 1666888, 2083610, 3333776, 4167220, 8334440, 16668880]

約数ペア:

[(1, 16668880), (2, 8334440), (4, 4167220), (5, 3333776), (8, 2083610), (10, 1666888), (16, 1041805), (20, 833444), (40, 416722), (80, 208361), (139, 119920), (278, 59960), (556, 29980), (695, 23984), (1112, 14990), (1390, 11992), (1499, 11120), (2224, 7495), (2780, 5996), (2998, 5560)]