689330980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2651273}}^1$

素因数の和:2651295

約数の個数: 24

約数和(自身を含む): 1558949112

約数和(自身を除く): 869618132

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2651273, 5302546, 10605092, 13256365, 26512730, 34466549, 53025460, 68933098, 137866196, 172332745, 344665490, 689330980]

約数ペア:

[(1, 689330980), (2, 344665490), (4, 172332745), (5, 137866196), (10, 68933098), (13, 53025460), (20, 34466549), (26, 26512730), (52, 13256365), (65, 10605092), (130, 5302546), (260, 2651273)]