20807470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1129}}^1$

素因数の和:1252

約数の個数: 32

約数和(自身を含む): 39866400

約数和(自身を除く): 19058930

約数列:

[1, 2, 5, 10, 19, 38, 95, 97, 190, 194, 485, 970, 1129, 1843, 2258, 3686, 5645, 9215, 11290, 18430, 21451, 42902, 107255, 109513, 214510, 219026, 547565, 1095130, 2080747, 4161494, 10403735, 20807470]

約数ペア:

[(1, 20807470), (2, 10403735), (5, 4161494), (10, 2080747), (19, 1095130), (38, 547565), (95, 219026), (97, 214510), (190, 109513), (194, 107255), (485, 42902), (970, 21451), (1129, 18430), (1843, 11290), (2258, 9215), (3686, 5645)]