21156386

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{9127}}^1$

素因数の和:9209

約数の個数: 16

約数和(自身を含む): 33956160

約数和(自身を除く): 12799774

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 9127, 18254, 173413, 346826, 556747, 1113494, 10578193, 21156386]

約数ペア:

[(1, 21156386), (2, 10578193), (19, 1113494), (38, 556747), (61, 346826), (122, 173413), (1159, 18254), (2318, 9127)]