20121981635

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{293773}}^1$

素因数の和:293907

約数の個数: 32

約数和(自身を含む): 29330396160

約数和(自身を除く): 9208414525

約数列:

[1, 5, 7, 19, 35, 95, 103, 133, 515, 665, 721, 1957, 3605, 9785, 13699, 68495, 293773, 1468865, 2056411, 5581687, 10282055, 27908435, 30258619, 39071809, 151293095, 195359045, 211810333, 574913761, 1059051665, 2874568805, 4024396327, 20121981635]

約数ペア:

[(1, 20121981635), (5, 4024396327), (7, 2874568805), (19, 1059051665), (35, 574913761), (95, 211810333), (103, 195359045), (133, 151293095), (515, 39071809), (665, 30258619), (721, 27908435), (1957, 10282055), (3605, 5581687), (9785, 2056411), (13699, 1468865), (68495, 293773)]