645688251

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{69857}}^1$

素因数の和:69955

約数の個数: 24

約数和(自身を含む): 1017132480

約数和(自身を除く): 371444229

約数列:

[1, 3, 9, 13, 39, 79, 117, 237, 711, 1027, 3081, 9243, 69857, 209571, 628713, 908141, 2724423, 5518703, 8173269, 16556109, 49668327, 71743139, 215229417, 645688251]

約数ペア:

[(1, 645688251), (3, 215229417), (9, 71743139), (13, 49668327), (39, 16556109), (79, 8173269), (117, 5518703), (237, 2724423), (711, 908141), (1027, 628713), (3081, 209571), (9243, 69857)]