20709820

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3821}}^1$

素因数の和:4101

約数の個数: 24

約数和(自身を含む): 43662528

約数和(自身を除く): 22952708

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3821, 5420, 7642, 15284, 19105, 38210, 76420, 1035491, 2070982, 4141964, 5177455, 10354910, 20709820]

約数ペア:

[(1, 20709820), (2, 10354910), (4, 5177455), (5, 4141964), (10, 2070982), (20, 1035491), (271, 76420), (542, 38210), (1084, 19105), (1355, 15284), (2710, 7642), (3821, 5420)]