12888880

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2207}}^1$

素因数の和:2293

約数の個数: 40

約数和(自身を含む): 30390912

約数和(自身を除く): 17502032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2207, 2920, 4414, 5840, 8828, 11035, 17656, 22070, 35312, 44140, 88280, 161111, 176560, 322222, 644444, 805555, 1288888, 1611110, 2577776, 3222220, 6444440, 12888880]

約数ペア:

[(1, 12888880), (2, 6444440), (4, 3222220), (5, 2577776), (8, 1611110), (10, 1288888), (16, 805555), (20, 644444), (40, 322222), (73, 176560), (80, 161111), (146, 88280), (292, 44140), (365, 35312), (584, 22070), (730, 17656), (1168, 11035), (1460, 8828), (2207, 5840), (2920, 4414)]