208243625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{53}}^1$

素因数の和:171

約数の個数: 48

約数和(自身を含む): 287039376

約数和(自身を除く): 78795751

約数列:

[1, 5, 17, 25, 43, 53, 85, 125, 215, 265, 425, 731, 901, 1075, 1325, 1849, 2125, 2279, 3655, 4505, 5375, 6625, 9245, 11395, 18275, 22525, 31433, 38743, 46225, 56975, 91375, 97997, 112625, 157165, 193715, 231125, 284875, 489985, 785825, 968575, 1665949, 2449925, 3929125, 4842875, 8329745, 12249625, 41648725, 208243625]

約数ペア:

[(1, 208243625), (5, 41648725), (17, 12249625), (25, 8329745), (43, 4842875), (53, 3929125), (85, 2449925), (125, 1665949), (215, 968575), (265, 785825), (425, 489985), (731, 284875), (901, 231125), (1075, 193715), (1325, 157165), (1849, 112625), (2125, 97997), (2279, 91375), (3655, 56975), (4505, 46225), (5375, 38743), (6625, 31433), (9245, 22525), (11395, 18275)]