20860819

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 26101440

約数和(自身を除く): 5240621

約数列:

[1, 7, 17, 49, 79, 119, 317, 553, 833, 1343, 2219, 3871, 5389, 9401, 15533, 25043, 37723, 65807, 175301, 264061, 425731, 1227107, 2980117, 20860819]

約数ペア:

[(1, 20860819), (7, 2980117), (17, 1227107), (49, 425731), (79, 264061), (119, 175301), (317, 65807), (553, 37723), (833, 25043), (1343, 15533), (2219, 9401), (3871, 5389)]