20860972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^2$

素因数の和:366

約数の個数: 36

約数和(自身を含む): 42422184

約数和(自身を除く): 21561212

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 167, 187, 334, 374, 668, 748, 1837, 2839, 3674, 5678, 7348, 11356, 27889, 31229, 55778, 62458, 111556, 124916, 306779, 474113, 613558, 948226, 1227116, 1896452, 5215243, 10430486, 20860972]

約数ペア:

[(1, 20860972), (2, 10430486), (4, 5215243), (11, 1896452), (17, 1227116), (22, 948226), (34, 613558), (44, 474113), (68, 306779), (167, 124916), (187, 111556), (334, 62458), (374, 55778), (668, 31229), (748, 27889), (1837, 11356), (2839, 7348), (3674, 5678)]