21051727905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1087}}^1\times {\mathrm{99317}}^1$

素因数の和:100425

約数の個数: 32

約数和(自身を含む): 36307482624

約数和(自身を除く): 15255754719

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 1087, 3261, 5435, 14131, 16305, 42393, 70655, 99317, 211965, 297951, 496585, 1291121, 1489755, 3873363, 6455605, 19366815, 107957579, 323872737, 539787895, 1403448527, 1619363685, 4210345581, 7017242635, 21051727905]

約数ペア:

[(1, 21051727905), (3, 7017242635), (5, 4210345581), (13, 1619363685), (15, 1403448527), (39, 539787895), (65, 323872737), (195, 107957579), (1087, 19366815), (3261, 6455605), (5435, 3873363), (14131, 1489755), (16305, 1291121), (42393, 496585), (70655, 297951), (99317, 211965)]