21493661

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7853}}^1$

素因数の和:7900

約数の個数: 16

約数和(自身を含む): 27143424

約数和(自身を除く): 5649763

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7853, 54971, 133501, 180619, 934507, 1264333, 3070523, 21493661]

約数ペア:

[(1, 21493661), (7, 3070523), (17, 1264333), (23, 934507), (119, 180619), (161, 133501), (391, 54971), (2737, 7853)]