21894551

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{569}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 4371049

約数列:

[1, 7, 23, 161, 239, 569, 1673, 3983, 5497, 13087, 38479, 91609, 135991, 951937, 3127793, 21894551]

約数ペア:

[(1, 21894551), (7, 3127793), (23, 951937), (161, 135991), (239, 91609), (569, 38479), (1673, 13087), (3983, 5497)]