21050313

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6491}}^1$

素因数の和:6564

約数の個数: 16

約数和(自身を含む): 29915136

約数和(自身を除く): 8864823

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6491, 19473, 149293, 305077, 447879, 915231, 7016771, 21050313]

約数ペア:

[(1, 21050313), (3, 7016771), (23, 915231), (47, 447879), (69, 305077), (141, 149293), (1081, 19473), (3243, 6491)]