64072840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123217}}^1$

素因数の和:123241

約数の個数: 32

約数和(自身を含む): 155254680

約数和(自身を除く): 91181840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123217, 246434, 492868, 616085, 985736, 1232170, 1601821, 2464340, 3203642, 4928680, 6407284, 8009105, 12814568, 16018210, 32036420, 64072840]

約数ペア:

[(1, 64072840), (2, 32036420), (4, 16018210), (5, 12814568), (8, 8009105), (10, 6407284), (13, 4928680), (20, 3203642), (26, 2464340), (40, 1601821), (52, 1232170), (65, 985736), (104, 616085), (130, 492868), (260, 246434), (520, 123217)]