21197428

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24421}}^1$

素因数の和:24463

約数の個数: 24

約数和(自身を含む): 43764224

約数和(自身を除く): 22566796

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 24421, 48842, 97684, 170947, 341894, 683788, 757051, 1514102, 3028204, 5299357, 10598714, 21197428]

約数ペア:

[(1, 21197428), (2, 10598714), (4, 5299357), (7, 3028204), (14, 1514102), (28, 757051), (31, 683788), (62, 341894), (124, 170947), (217, 97684), (434, 48842), (868, 24421)]