28308520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6871}}^1$

素因数の和:6985

約数の個数: 32

約数和(自身を含む): 64321920

約数和(自身を除く): 36013400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6871, 13742, 27484, 34355, 54968, 68710, 137420, 274840, 707713, 1415426, 2830852, 3538565, 5661704, 7077130, 14154260, 28308520]

約数ペア:

[(1, 28308520), (2, 14154260), (4, 7077130), (5, 5661704), (8, 3538565), (10, 2830852), (20, 1415426), (40, 707713), (103, 274840), (206, 137420), (412, 68710), (515, 54968), (824, 34355), (1030, 27484), (2060, 13742), (4120, 6871)]