68891860

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{5227}}^1$

素因数の和:5895

約数の個数: 24

約数和(自身を含む): 144920160

約数和(自身を除く): 76028300

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2636, 3295, 5227, 6590, 10454, 13180, 20908, 26135, 52270, 104540, 3444593, 6889186, 13778372, 17222965, 34445930, 68891860]

約数ペア:

[(1, 68891860), (2, 34445930), (4, 17222965), (5, 13778372), (10, 6889186), (20, 3444593), (659, 104540), (1318, 52270), (2636, 26135), (3295, 20908), (5227, 13180), (6590, 10454)]