664273480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1277449}}^1$

素因数の和:1277473

約数の個数: 32

約数和(自身を含む): 1609587000

約数和(自身を除く): 945313520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1277449, 2554898, 5109796, 6387245, 10219592, 12774490, 16606837, 25548980, 33213674, 51097960, 66427348, 83034185, 132854696, 166068370, 332136740, 664273480]

約数ペア:

[(1, 664273480), (2, 332136740), (4, 166068370), (5, 132854696), (8, 83034185), (10, 66427348), (13, 51097960), (20, 33213674), (26, 25548980), (40, 16606837), (52, 12774490), (65, 10219592), (104, 6387245), (130, 5109796), (260, 2554898), (520, 1277449)]