64123280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61657}}^1$

素因数の和:61683

約数の個数: 40

約数和(自身を含む): 160557432

約数和(自身を除く): 96434152

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 61657, 123314, 246628, 308285, 493256, 616570, 801541, 986512, 1233140, 1603082, 2466280, 3206164, 4007705, 4932560, 6412328, 8015410, 12824656, 16030820, 32061640, 64123280]

約数ペア:

[(1, 64123280), (2, 32061640), (4, 16030820), (5, 12824656), (8, 8015410), (10, 6412328), (13, 4932560), (16, 4007705), (20, 3206164), (26, 2466280), (40, 1603082), (52, 1233140), (65, 986512), (80, 801541), (104, 616570), (130, 493256), (208, 308285), (260, 246628), (520, 123314), (1040, 61657)]