19944005

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{577}}^1$

素因数の和:836

約数の個数: 16

約数和(自身を含む): 24858624

約数和(自身を除く): 4914619

約数列:

[1, 5, 31, 155, 223, 577, 1115, 2885, 6913, 17887, 34565, 89435, 128671, 643355, 3988801, 19944005]

約数ペア:

[(1, 19944005), (5, 3988801), (31, 643355), (155, 128671), (223, 89435), (577, 34565), (1115, 17887), (2885, 6913)]