81713240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{291833}}^1$

素因数の和:291851

約数の個数: 32

約数和(自身を含む): 210120480

約数和(自身を除く): 128407240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 291833, 583666, 1167332, 1459165, 2042831, 2334664, 2918330, 4085662, 5836660, 8171324, 10214155, 11673320, 16342648, 20428310, 40856620, 81713240]

約数ペア:

[(1, 81713240), (2, 40856620), (4, 20428310), (5, 16342648), (7, 11673320), (8, 10214155), (10, 8171324), (14, 5836660), (20, 4085662), (28, 2918330), (35, 2334664), (40, 2042831), (56, 1459165), (70, 1167332), (140, 583666), (280, 291833)]