628997421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{2389}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 930455680

約数和(自身を除く): 301458259

約数列:

[1, 3, 13, 39, 43, 129, 157, 471, 559, 1677, 2041, 2389, 6123, 6751, 7167, 20253, 31057, 87763, 93171, 102727, 263289, 308181, 375073, 1125219, 1335451, 4006353, 4875949, 14627847, 16128139, 48384417, 209665807, 628997421]

約数ペア:

[(1, 628997421), (3, 209665807), (13, 48384417), (39, 16128139), (43, 14627847), (129, 4875949), (157, 4006353), (471, 1335451), (559, 1125219), (1677, 375073), (2041, 308181), (2389, 263289), (6123, 102727), (6751, 93171), (7167, 87763), (20253, 31057)]