20180406987

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{660851}}^1$

素因数の和:660905

約数の個数: 40

約数和(自身を含む): 33584498640

約数和(自身を除く): 13404091653

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 783, 1053, 1131, 2349, 3393, 10179, 30537, 660851, 1982553, 5947659, 8591063, 17842977, 19164679, 25773189, 53528931, 57494037, 77319567, 172482111, 231958701, 249140827, 517446333, 695876103, 747422481, 1552338999, 2242267443, 6726802329, 20180406987]

約数ペア:

[(1, 20180406987), (3, 6726802329), (9, 2242267443), (13, 1552338999), (27, 747422481), (29, 695876103), (39, 517446333), (81, 249140827), (87, 231958701), (117, 172482111), (261, 77319567), (351, 57494037), (377, 53528931), (783, 25773189), (1053, 19164679), (1131, 17842977), (2349, 8591063), (3393, 5947659), (10179, 1982553), (30537, 660851)]