2017720520

素因数分解:

$2^3\times 5^1\times {\mathrm{743}}^1\times {\mathrm{67891}}^1$

素因数の和:68645

約数の個数: 32

約数和(自身を含む): 4546048320

約数和(自身を除く): 2528327800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 743, 1486, 2972, 3715, 5944, 7430, 14860, 29720, 67891, 135782, 271564, 339455, 543128, 678910, 1357820, 2715640, 50443013, 100886026, 201772052, 252215065, 403544104, 504430130, 1008860260, 2017720520]

約数ペア:

[(1, 2017720520), (2, 1008860260), (4, 504430130), (5, 403544104), (8, 252215065), (10, 201772052), (20, 100886026), (40, 50443013), (743, 2715640), (1486, 1357820), (2972, 678910), (3715, 543128), (5944, 339455), (7430, 271564), (14860, 135782), (29720, 67891)]