2019909090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1565821}}^1$

素因数の和:1565874

約数の個数: 32

約数和(自身を含む): 4960524096

約数和(自身を除く): 2940615006

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 1565821, 3131642, 4697463, 7829105, 9394926, 15658210, 23487315, 46974630, 67330303, 134660606, 201990909, 336651515, 403981818, 673303030, 1009954545, 2019909090]

約数ペア:

[(1, 2019909090), (2, 1009954545), (3, 673303030), (5, 403981818), (6, 336651515), (10, 201990909), (15, 134660606), (30, 67330303), (43, 46974630), (86, 23487315), (129, 15658210), (215, 9394926), (258, 7829105), (430, 4697463), (645, 3131642), (1290, 1565821)]