12912101960

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{657439}}^1$

素因数の和:657941

約数の個数: 32

約数和(自身を含む): 29111443200

約数和(自身を除く): 16199341240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 19640, 657439, 1314878, 2629756, 3287195, 5259512, 6574390, 13148780, 26297560, 322802549, 645605098, 1291210196, 1614012745, 2582420392, 3228025490, 6456050980, 12912101960]

約数ペア:

[(1, 12912101960), (2, 6456050980), (4, 3228025490), (5, 2582420392), (8, 1614012745), (10, 1291210196), (20, 645605098), (40, 322802549), (491, 26297560), (982, 13148780), (1964, 6574390), (2455, 5259512), (3928, 3287195), (4910, 2629756), (9820, 1314878), (19640, 657439)]