20383978

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1\times {\mathrm{563}}^1$

素因数の和:1029

約数の個数: 16

約数和(自身を含む): 31417056

約数和(自身を除く): 11033078

約数列:

[1, 2, 43, 86, 421, 563, 842, 1126, 18103, 24209, 36206, 48418, 237023, 474046, 10191989, 20383978]

約数ペア:

[(1, 20383978), (2, 10191989), (43, 474046), (86, 237023), (421, 48418), (563, 36206), (842, 24209), (1126, 18103)]