15625820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{467}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 22113700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 467, 478, 934, 956, 1195, 1673, 1868, 2335, 2390, 3269, 3346, 4670, 4780, 6538, 6692, 8365, 9340, 13076, 16345, 16730, 32690, 33460, 65380, 111613, 223226, 446452, 558065, 781291, 1116130, 1562582, 2232260, 3125164, 3906455, 7812910, 15625820]

約数ペア:

[(1, 15625820), (2, 7812910), (4, 3906455), (5, 3125164), (7, 2232260), (10, 1562582), (14, 1116130), (20, 781291), (28, 558065), (35, 446452), (70, 223226), (140, 111613), (239, 65380), (467, 33460), (478, 32690), (934, 16730), (956, 16345), (1195, 13076), (1673, 9340), (1868, 8365), (2335, 6692), (2390, 6538), (3269, 4780), (3346, 4670)]