208315009

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 248806080

約数和(自身を除く): 40491071

約数列:

[1, 7, 31, 173, 179, 217, 961, 1211, 1253, 5363, 5549, 6727, 30967, 37541, 38843, 166253, 172019, 216769, 959977, 1163771, 1204133, 6719839, 29759287, 208315009]

約数ペア:

[(1, 208315009), (7, 29759287), (31, 6719839), (173, 1204133), (179, 1163771), (217, 959977), (961, 216769), (1211, 172019), (1253, 166253), (5363, 38843), (5549, 37541), (6727, 30967)]