21152695

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{571}}^1$

素因数の和:846

約数の個数: 16

約数和(自身を含む): 26357760

約数和(自身を除く): 5205065

約数列:

[1, 5, 31, 155, 239, 571, 1195, 2855, 7409, 17701, 37045, 88505, 136469, 682345, 4230539, 21152695]

約数ペア:

[(1, 21152695), (5, 4230539), (31, 682345), (155, 136469), (239, 88505), (571, 37045), (1195, 17701), (2855, 7409)]