20079620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{853}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 46484928

約数和(自身を除く): 26405308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 214, 220, 428, 535, 853, 1070, 1177, 1706, 2140, 2354, 3412, 4265, 4708, 5885, 8530, 9383, 11770, 17060, 18766, 23540, 37532, 46915, 91271, 93830, 182542, 187660, 365084, 456355, 912710, 1003981, 1825420, 2007962, 4015924, 5019905, 10039810, 20079620]

約数ペア:

[(1, 20079620), (2, 10039810), (4, 5019905), (5, 4015924), (10, 2007962), (11, 1825420), (20, 1003981), (22, 912710), (44, 456355), (55, 365084), (107, 187660), (110, 182542), (214, 93830), (220, 91271), (428, 46915), (535, 37532), (853, 23540), (1070, 18766), (1177, 17060), (1706, 11770), (2140, 9383), (2354, 8530), (3412, 5885), (4265, 4708)]