20419360

素因数分解:

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

素因数の和:9845

約数の個数: 48

約数和(自身を含む): 51956856

約数和(自身を除く): 31537496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9817, 19634, 39268, 49085, 78536, 98170, 127621, 157072, 196340, 255242, 314144, 392680, 510484, 638105, 785360, 1020968, 1276210, 1570720, 2041936, 2552420, 4083872, 5104840, 10209680, 20419360]

約数ペア:

[(1, 20419360), (2, 10209680), (4, 5104840), (5, 4083872), (8, 2552420), (10, 2041936), (13, 1570720), (16, 1276210), (20, 1020968), (26, 785360), (32, 638105), (40, 510484), (52, 392680), (65, 314144), (80, 255242), (104, 196340), (130, 157072), (160, 127621), (208, 98170), (260, 78536), (416, 49085), (520, 39268), (1040, 19634), (2080, 9817)]