66806480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{64237}}^1$

素因数の和:64263

約数の個数: 40

約数和(自身を含む): 167275752

約数和(自身を除く): 100469272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 64237, 128474, 256948, 321185, 513896, 642370, 835081, 1027792, 1284740, 1670162, 2569480, 3340324, 4175405, 5138960, 6680648, 8350810, 13361296, 16701620, 33403240, 66806480]

約数ペア:

[(1, 66806480), (2, 33403240), (4, 16701620), (5, 13361296), (8, 8350810), (10, 6680648), (13, 5138960), (16, 4175405), (20, 3340324), (26, 2569480), (40, 1670162), (52, 1284740), (65, 1027792), (80, 835081), (104, 642370), (130, 513896), (208, 321185), (260, 256948), (520, 128474), (1040, 64237)]