20168645

素因数分解:

$5^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 28366848

約数和(自身を除く): 8198203

約数列:

[1, 5, 7, 35, 49, 191, 245, 431, 955, 1337, 2155, 3017, 6685, 9359, 15085, 21119, 46795, 82321, 105595, 411605, 576247, 2881235, 4033729, 20168645]

約数ペア:

[(1, 20168645), (5, 4033729), (7, 2881235), (35, 576247), (49, 411605), (191, 105595), (245, 82321), (431, 46795), (955, 21119), (1337, 15085), (2155, 9359), (3017, 6685)]