21374965

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{577}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 26634240

約数和(自身を除く): 5259275

約数列:

[1, 5, 31, 155, 239, 577, 1195, 2885, 7409, 17887, 37045, 89435, 137903, 689515, 4274993, 21374965]

約数ペア:

[(1, 21374965), (5, 4274993), (31, 689515), (155, 137903), (239, 89435), (577, 37045), (1195, 17887), (2885, 7409)]