1640129905

素因数分解:

$5^1\times {\mathrm{631}}^1\times {\mathrm{641}}^1\times {\mathrm{811}}^1$

素因数の和:2088

約数の個数: 16

約数和(自身を含む): 1976784768

約数和(自身を除く): 336654863

約数列:

[1, 5, 631, 641, 811, 3155, 3205, 4055, 404471, 511741, 519851, 2022355, 2558705, 2599255, 328025981, 1640129905]

約数ペア:

[(1, 1640129905), (5, 328025981), (631, 2599255), (641, 2558705), (811, 2022355), (3155, 519851), (3205, 511741), (4055, 404471)]