20498005

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1993}}^1$

素因数の和:2037

約数の個数: 24

約数和(自身を含む): 28641816

約数和(自身を除く): 8143811

約数列:

[1, 5, 11, 17, 55, 85, 121, 187, 605, 935, 1993, 2057, 9965, 10285, 21923, 33881, 109615, 169405, 241153, 372691, 1205765, 1863455, 4099601, 20498005]

約数ペア:

[(1, 20498005), (5, 4099601), (11, 1863455), (17, 1205765), (55, 372691), (85, 241153), (121, 169405), (187, 109615), (605, 33881), (935, 21923), (1993, 10285), (2057, 9965)]