21820156

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{1181}}^1$

素因数の和:1365

約数の個数: 24

約数和(自身を含む): 39715200

約数和(自身を除く): 17895044

約数列:

[1, 2, 4, 31, 62, 124, 149, 298, 596, 1181, 2362, 4619, 4724, 9238, 18476, 36611, 73222, 146444, 175969, 351938, 703876, 5455039, 10910078, 21820156]

約数ペア:

[(1, 21820156), (2, 10910078), (4, 5455039), (31, 703876), (62, 351938), (124, 175969), (149, 146444), (298, 73222), (596, 36611), (1181, 18476), (2362, 9238), (4619, 4724)]