19903550

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{12841}}^1$

素因数の和:12884

約数の個数: 24

約数和(自身を含む): 38217792

約数和(自身を除く): 18314242

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 12841, 25682, 64205, 128410, 321025, 398071, 642050, 796142, 1990355, 3980710, 9951775, 19903550]

約数ペア:

[(1, 19903550), (2, 9951775), (5, 3980710), (10, 1990355), (25, 796142), (31, 642050), (50, 398071), (62, 321025), (155, 128410), (310, 64205), (775, 25682), (1550, 12841)]