20253968

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1301}}^1$

素因数の和:1455

約数の個数: 40

約数和(自身を含む): 45205440

約数和(自身を除く): 24951472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 973, 1112, 1301, 1946, 2224, 2602, 3892, 5204, 7784, 9107, 10408, 15568, 18214, 20816, 36428, 72856, 145712, 180839, 361678, 723356, 1265873, 1446712, 2531746, 2893424, 5063492, 10126984, 20253968]

約数ペア:

[(1, 20253968), (2, 10126984), (4, 5063492), (7, 2893424), (8, 2531746), (14, 1446712), (16, 1265873), (28, 723356), (56, 361678), (112, 180839), (139, 145712), (278, 72856), (556, 36428), (973, 20816), (1112, 18214), (1301, 15568), (1946, 10408), (2224, 9107), (2602, 7784), (3892, 5204)]