8904440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 21288960

約数和(自身を除く): 12384520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 167, 172, 215, 248, 310, 334, 344, 430, 620, 668, 835, 860, 1240, 1333, 1336, 1670, 1720, 2666, 3340, 5177, 5332, 6665, 6680, 7181, 10354, 10664, 13330, 14362, 20708, 25885, 26660, 28724, 35905, 41416, 51770, 53320, 57448, 71810, 103540, 143620, 207080, 222611, 287240, 445222, 890444, 1113055, 1780888, 2226110, 4452220, 8904440]

約数ペア:

[(1, 8904440), (2, 4452220), (4, 2226110), (5, 1780888), (8, 1113055), (10, 890444), (20, 445222), (31, 287240), (40, 222611), (43, 207080), (62, 143620), (86, 103540), (124, 71810), (155, 57448), (167, 53320), (172, 51770), (215, 41416), (248, 35905), (310, 28724), (334, 26660), (344, 25885), (430, 20708), (620, 14362), (668, 13330), (835, 10664), (860, 10354), (1240, 7181), (1333, 6680), (1336, 6665), (1670, 5332), (1720, 5177), (2666, 3340)]