21711303

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 32381856

約数和(自身を除く): 10670553

約数列:

[1, 3, 9, 61, 71, 183, 213, 549, 557, 639, 1671, 4331, 5013, 12993, 33977, 38979, 39547, 101931, 118641, 305793, 355923, 2412367, 7237101, 21711303]

約数ペア:

[(1, 21711303), (3, 7237101), (9, 2412367), (61, 355923), (71, 305793), (183, 118641), (213, 101931), (549, 39547), (557, 38979), (639, 33977), (1671, 12993), (4331, 5013)]