39908920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6121}}^1$

素因数の和:6295

約数の個数: 32

約数和(自身を含む): 90360720

約数和(自身を除く): 50451800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6121, 6520, 12242, 24484, 30605, 48968, 61210, 122420, 244840, 997723, 1995446, 3990892, 4988615, 7981784, 9977230, 19954460, 39908920]

約数ペア:

[(1, 39908920), (2, 19954460), (4, 9977230), (5, 7981784), (8, 4988615), (10, 3990892), (20, 1995446), (40, 997723), (163, 244840), (326, 122420), (652, 61210), (815, 48968), (1304, 30605), (1630, 24484), (3260, 12242), (6121, 6520)]