8729121890

素因数分解:

$2^1\times 5^1\times {\mathrm{20719}}^1\times {\mathrm{42131}}^1$

素因数の和:62857

約数の個数: 16

約数和(自身を含む): 15713550720

約数和(自身を除く): 6984428830

約数列:

[1, 2, 5, 10, 20719, 41438, 42131, 84262, 103595, 207190, 210655, 421310, 872912189, 1745824378, 4364560945, 8729121890]

約数ペア:

[(1, 8729121890), (2, 4364560945), (5, 1745824378), (10, 872912189), (20719, 421310), (41438, 210655), (42131, 207190), (84262, 103595)]