65437580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{647}}^1$

素因数の和:1058

約数の個数: 48

約数和(自身を含む): 148599360

約数和(自身を除く): 83161780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 647, 778, 1294, 1556, 1945, 2588, 3235, 3890, 5057, 6470, 7780, 8411, 10114, 12940, 16822, 20228, 25285, 33644, 42055, 50570, 84110, 101140, 168220, 251683, 503366, 1006732, 1258415, 2516830, 3271879, 5033660, 6543758, 13087516, 16359395, 32718790, 65437580]

約数ペア:

[(1, 65437580), (2, 32718790), (4, 16359395), (5, 13087516), (10, 6543758), (13, 5033660), (20, 3271879), (26, 2516830), (52, 1258415), (65, 1006732), (130, 503366), (260, 251683), (389, 168220), (647, 101140), (778, 84110), (1294, 50570), (1556, 42055), (1945, 33644), (2588, 25285), (3235, 20228), (3890, 16822), (5057, 12940), (6470, 10114), (7780, 8411)]