25218640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7331}}^1$

素因数の和:7387

約数の個数: 40

約数和(自身を含む): 60005088

約数和(自身を除く): 34786448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 7331, 14662, 29324, 36655, 58648, 73310, 117296, 146620, 293240, 315233, 586480, 630466, 1260932, 1576165, 2521864, 3152330, 5043728, 6304660, 12609320, 25218640]

約数ペア:

[(1, 25218640), (2, 12609320), (4, 6304660), (5, 5043728), (8, 3152330), (10, 2521864), (16, 1576165), (20, 1260932), (40, 630466), (43, 586480), (80, 315233), (86, 293240), (172, 146620), (215, 117296), (344, 73310), (430, 58648), (688, 36655), (860, 29324), (1720, 14662), (3440, 7331)]