19789925360

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1575631}}^1$

素因数の和:1575801

約数の個数: 40

約数和(自身を含む): 46304673216

約数和(自身を除く): 26514747856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2512, 3140, 6280, 12560, 1575631, 3151262, 6302524, 7878155, 12605048, 15756310, 25210096, 31512620, 63025240, 126050480, 247374067, 494748134, 989496268, 1236870335, 1978992536, 2473740670, 3957985072, 4947481340, 9894962680, 19789925360]

約数ペア:

[(1, 19789925360), (2, 9894962680), (4, 4947481340), (5, 3957985072), (8, 2473740670), (10, 1978992536), (16, 1236870335), (20, 989496268), (40, 494748134), (80, 247374067), (157, 126050480), (314, 63025240), (628, 31512620), (785, 25210096), (1256, 15756310), (1570, 12605048), (2512, 7878155), (3140, 6302524), (6280, 3151262), (12560, 1575631)]