640223995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{971}}^1\times {\mathrm{7757}}^1$

素因数の和:8750

約数の個数: 16

約数和(自身を含む): 814403808

約数和(自身を除く): 174179813

約数列:

[1, 5, 17, 85, 971, 4855, 7757, 16507, 38785, 82535, 131869, 659345, 7532047, 37660235, 128044799, 640223995]

約数ペア:

[(1, 640223995), (5, 128044799), (17, 37660235), (85, 7532047), (971, 659345), (4855, 131869), (7757, 82535), (16507, 38785)]