19575985

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 29494080

約数和(自身を除く): 9918095

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 121, 131, 143, 209, 247, 605, 655, 715, 1045, 1235, 1441, 1573, 1703, 2299, 2489, 2717, 7205, 7865, 8515, 11495, 12445, 13585, 15851, 18733, 27379, 29887, 32357, 79255, 93665, 136895, 149435, 161785, 206063, 301169, 355927, 1030315, 1505845, 1779635, 3915197, 19575985]

約数ペア:

[(1, 19575985), (5, 3915197), (11, 1779635), (13, 1505845), (19, 1030315), (55, 355927), (65, 301169), (95, 206063), (121, 161785), (131, 149435), (143, 136895), (209, 93665), (247, 79255), (605, 32357), (655, 29887), (715, 27379), (1045, 18733), (1235, 15851), (1441, 13585), (1573, 12445), (1703, 11495), (2299, 8515), (2489, 7865), (2717, 7205)]