21057440

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3557}}^1$

素因数の和:3609

約数の個数: 48

約数和(自身を含む): 51107112

約数和(自身を除く): 30049672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3557, 5920, 7114, 14228, 17785, 28456, 35570, 56912, 71140, 113824, 131609, 142280, 263218, 284560, 526436, 569120, 658045, 1052872, 1316090, 2105744, 2632180, 4211488, 5264360, 10528720, 21057440]

約数ペア:

[(1, 21057440), (2, 10528720), (4, 5264360), (5, 4211488), (8, 2632180), (10, 2105744), (16, 1316090), (20, 1052872), (32, 658045), (37, 569120), (40, 526436), (74, 284560), (80, 263218), (148, 142280), (160, 131609), (185, 113824), (296, 71140), (370, 56912), (592, 35570), (740, 28456), (1184, 17785), (1480, 14228), (2960, 7114), (3557, 5920)]