640146475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{22481}}^1$

素因数の和:22575

約数の個数: 24

約数和(自身を含む): 853057008

約数和(自身を除く): 212910533

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 1139, 1675, 5695, 22481, 28475, 112405, 382177, 562025, 1506227, 1910885, 7531135, 9554425, 25605859, 37655675, 128029295, 640146475]

約数ペア:

[(1, 640146475), (5, 128029295), (17, 37655675), (25, 25605859), (67, 9554425), (85, 7531135), (335, 1910885), (425, 1506227), (1139, 562025), (1675, 382177), (5695, 112405), (22481, 28475)]