19911550

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 39015360

約数和(自身を除く): 19103810

約数列:

[1, 2, 5, 10, 25, 37, 47, 50, 74, 94, 185, 229, 235, 370, 458, 470, 925, 1145, 1175, 1739, 1850, 2290, 2350, 3478, 5725, 8473, 8695, 10763, 11450, 16946, 17390, 21526, 42365, 43475, 53815, 84730, 86950, 107630, 211825, 269075, 398231, 423650, 538150, 796462, 1991155, 3982310, 9955775, 19911550]

約数ペア:

[(1, 19911550), (2, 9955775), (5, 3982310), (10, 1991155), (25, 796462), (37, 538150), (47, 423650), (50, 398231), (74, 269075), (94, 211825), (185, 107630), (229, 86950), (235, 84730), (370, 53815), (458, 43475), (470, 42365), (925, 21526), (1145, 17390), (1175, 16946), (1739, 11450), (1850, 10763), (2290, 8695), (2350, 8473), (3478, 5725)]