20858915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3187}}^1$

素因数の和:3227

約数の個数: 32

約数和(自身を含む): 33053184

約数和(自身を除く): 12194269

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3187, 6545, 15935, 22309, 35057, 54179, 111545, 175285, 245399, 270895, 379253, 595969, 1226995, 1896265, 2979845, 4171783, 20858915]

約数ペア:

[(1, 20858915), (5, 4171783), (7, 2979845), (11, 1896265), (17, 1226995), (35, 595969), (55, 379253), (77, 270895), (85, 245399), (119, 175285), (187, 111545), (385, 54179), (595, 35057), (935, 22309), (1309, 15935), (3187, 6545)]