20178086505

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1\times {\mathrm{138581}}^1$

素因数の和:139177

約数の個数: 32

約数和(自身を含む): 34244166528

約数和(自身を除く): 14066080023

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 571, 1713, 2855, 8565, 9707, 29121, 48535, 138581, 145605, 415743, 692905, 2078715, 2355877, 7067631, 11779385, 35338155, 79129751, 237389253, 395648755, 1186946265, 1345205767, 4035617301, 6726028835, 20178086505]

約数ペア:

[(1, 20178086505), (3, 6726028835), (5, 4035617301), (15, 1345205767), (17, 1186946265), (51, 395648755), (85, 237389253), (255, 79129751), (571, 35338155), (1713, 11779385), (2855, 7067631), (8565, 2355877), (9707, 2078715), (29121, 692905), (48535, 415743), (138581, 145605)]