21695570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9817}}^1$

素因数の和:9854

約数の個数: 32

約数和(自身を含む): 44534448

約数和(自身を除く): 22838878

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9817, 19634, 49085, 98170, 127621, 166889, 255242, 333778, 638105, 834445, 1276210, 1668890, 2169557, 4339114, 10847785, 21695570]

約数ペア:

[(1, 21695570), (2, 10847785), (5, 4339114), (10, 2169557), (13, 1668890), (17, 1276210), (26, 834445), (34, 638105), (65, 333778), (85, 255242), (130, 166889), (170, 127621), (221, 98170), (442, 49085), (1105, 19634), (2210, 9817)]