8421940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{599}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 19152000

約数和(自身を除く): 10730060

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 599, 703, 740, 1198, 1406, 2396, 2812, 2995, 3515, 5990, 7030, 11381, 11980, 14060, 22163, 22762, 44326, 45524, 56905, 88652, 110815, 113810, 221630, 227620, 421097, 443260, 842194, 1684388, 2105485, 4210970, 8421940]

約数ペア:

[(1, 8421940), (2, 4210970), (4, 2105485), (5, 1684388), (10, 842194), (19, 443260), (20, 421097), (37, 227620), (38, 221630), (74, 113810), (76, 110815), (95, 88652), (148, 56905), (185, 45524), (190, 44326), (370, 22762), (380, 22163), (599, 14060), (703, 11980), (740, 11381), (1198, 7030), (1406, 5990), (2396, 3515), (2812, 2995)]