21656570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7243}}^1$

素因数の和:7286

約数の個数: 32

約数和(自身を含む): 43811712

約数和(自身を除く): 22155142

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 7243, 14486, 36215, 72430, 94159, 166589, 188318, 333178, 470795, 832945, 941590, 1665890, 2165657, 4331314, 10828285, 21656570]

約数ペア:

[(1, 21656570), (2, 10828285), (5, 4331314), (10, 2165657), (13, 1665890), (23, 941590), (26, 832945), (46, 470795), (65, 333178), (115, 188318), (130, 166589), (230, 94159), (299, 72430), (598, 36215), (1495, 14486), (2990, 7243)]