21869631

素因数分解:

$3^2\times 7^2\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:612

約数の個数: 36

約数和(自身を含む): 37186344

約数和(自身を除く): 15316713

約数列:

[1, 3, 7, 9, 21, 49, 63, 101, 147, 303, 441, 491, 707, 909, 1473, 2121, 3437, 4419, 4949, 6363, 10311, 14847, 24059, 30933, 44541, 49591, 72177, 148773, 216531, 347137, 446319, 1041411, 2429959, 3124233, 7289877, 21869631]

約数ペア:

[(1, 21869631), (3, 7289877), (7, 3124233), (9, 2429959), (21, 1041411), (49, 446319), (63, 347137), (101, 216531), (147, 148773), (303, 72177), (441, 49591), (491, 44541), (707, 30933), (909, 24059), (1473, 14847), (2121, 10311), (3437, 6363), (4419, 4949)]