645885

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 1158144

約数和(自身を除く): 512259

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 463, 465, 1389, 1395, 2315, 4167, 6945, 14353, 20835, 43059, 71765, 129177, 215295, 645885]

約数ペア:

[(1, 645885), (3, 215295), (5, 129177), (9, 71765), (15, 43059), (31, 20835), (45, 14353), (93, 6945), (155, 4167), (279, 2315), (463, 1395), (465, 1389)]