639807975

素因数分解:

$3^2\times 5^2\times {\mathrm{1459}}^1\times {\mathrm{1949}}^1$

素因数の和:3424

約数の個数: 36

約数和(自身を含む): 1147341000

約数和(自身を除く): 507533025

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 1459, 1949, 4377, 5847, 7295, 9745, 13131, 17541, 21885, 29235, 36475, 48725, 65655, 87705, 109425, 146175, 328275, 438525, 2843591, 8530773, 14217955, 25592319, 42653865, 71089775, 127961595, 213269325, 639807975]

約数ペア:

[(1, 639807975), (3, 213269325), (5, 127961595), (9, 71089775), (15, 42653865), (25, 25592319), (45, 14217955), (75, 8530773), (225, 2843591), (1459, 438525), (1949, 328275), (4377, 146175), (5847, 109425), (7295, 87705), (9745, 65655), (13131, 48725), (17541, 36475), (21885, 29235)]