21702478

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67399}}^1$

素因数の和:67431

約数の個数: 16

約数和(自身を含む): 38822400

約数和(自身を除く): 17119922

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 67399, 134798, 471793, 943586, 1550177, 3100354, 10851239, 21702478]

約数ペア:

[(1, 21702478), (2, 10851239), (7, 3100354), (14, 1550177), (23, 943586), (46, 471793), (161, 134798), (322, 67399)]