31251640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{467}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 80870400

約数和(自身を除く): 49618760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 467, 478, 934, 956, 1195, 1673, 1868, 1912, 2335, 2390, 3269, 3346, 3736, 4670, 4780, 6538, 6692, 8365, 9340, 9560, 13076, 13384, 16345, 16730, 18680, 26152, 32690, 33460, 65380, 66920, 111613, 130760, 223226, 446452, 558065, 781291, 892904, 1116130, 1562582, 2232260, 3125164, 3906455, 4464520, 6250328, 7812910, 15625820, 31251640]

約数ペア:

[(1, 31251640), (2, 15625820), (4, 7812910), (5, 6250328), (7, 4464520), (8, 3906455), (10, 3125164), (14, 2232260), (20, 1562582), (28, 1116130), (35, 892904), (40, 781291), (56, 558065), (70, 446452), (140, 223226), (239, 130760), (280, 111613), (467, 66920), (478, 65380), (934, 33460), (956, 32690), (1195, 26152), (1673, 18680), (1868, 16730), (1912, 16345), (2335, 13384), (2390, 13076), (3269, 9560), (3346, 9340), (3736, 8365), (4670, 6692), (4780, 6538)]