21066175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1223}}^1$

素因数の和:1299

約数の個数: 24

約数和(自身を含む): 28685664

約数和(自身を除く): 7619489

約数列:

[1, 5, 13, 25, 53, 65, 265, 325, 689, 1223, 1325, 3445, 6115, 15899, 17225, 30575, 64819, 79495, 324095, 397475, 842647, 1620475, 4213235, 21066175]

約数ペア:

[(1, 21066175), (5, 4213235), (13, 1620475), (25, 842647), (53, 397475), (65, 324095), (265, 79495), (325, 64819), (689, 30575), (1223, 17225), (1325, 15899), (3445, 6115)]