2905940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 6504960

約数和(自身を除く): 3599020

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 109, 124, 155, 172, 215, 218, 310, 430, 436, 545, 620, 860, 1090, 1333, 2180, 2666, 3379, 4687, 5332, 6665, 6758, 9374, 13330, 13516, 16895, 18748, 23435, 26660, 33790, 46870, 67580, 93740, 145297, 290594, 581188, 726485, 1452970, 2905940]

約数ペア:

[(1, 2905940), (2, 1452970), (4, 726485), (5, 581188), (10, 290594), (20, 145297), (31, 93740), (43, 67580), (62, 46870), (86, 33790), (109, 26660), (124, 23435), (155, 18748), (172, 16895), (215, 13516), (218, 13330), (310, 9374), (430, 6758), (436, 6665), (545, 5332), (620, 4687), (860, 3379), (1090, 2666), (1333, 2180)]