71810540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40343}}^1$

素因数の和:40441

約数の個数: 24

約数和(自身を含む): 152500320

約数和(自身を除く): 80689780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 40343, 80686, 161372, 201715, 403430, 806860, 3590527, 7181054, 14362108, 17952635, 35905270, 71810540]

約数ペア:

[(1, 71810540), (2, 35905270), (4, 17952635), (5, 14362108), (10, 7181054), (20, 3590527), (89, 806860), (178, 403430), (356, 201715), (445, 161372), (890, 80686), (1780, 40343)]