19928909090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2087}}^1\times {\mathrm{56171}}^1$

素因数の和:58282

約数の個数: 32

約数和(自身を含む): 38001032064

約数和(自身を除く): 18072122974

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 2087, 4174, 10435, 20870, 35479, 56171, 70958, 112342, 177395, 280855, 354790, 561710, 954907, 1909814, 4774535, 9549070, 117228877, 234457754, 586144385, 1172288770, 1992890909, 3985781818, 9964454545, 19928909090]

約数ペア:

[(1, 19928909090), (2, 9964454545), (5, 3985781818), (10, 1992890909), (17, 1172288770), (34, 586144385), (85, 234457754), (170, 117228877), (2087, 9549070), (4174, 4774535), (10435, 1909814), (20870, 954907), (35479, 561710), (56171, 354790), (70958, 280855), (112342, 177395)]