87271940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 231739200

約数和(自身を除く): 144467260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 43, 49, 70, 76, 86, 95, 98, 109, 133, 140, 172, 190, 196, 215, 218, 245, 266, 301, 380, 430, 436, 490, 532, 545, 602, 665, 763, 817, 860, 931, 980, 1090, 1204, 1330, 1505, 1526, 1634, 1862, 2071, 2107, 2180, 2660, 3010, 3052, 3268, 3724, 3815, 4085, 4142, 4214, 4655, 4687, 5341, 5719, 6020, 7630, 8170, 8284, 8428, 9310, 9374, 10355, 10535, 10682, 11438, 14497, 15260, 16340, 18620, 18748, 20710, 21070, 21364, 22876, 23435, 26705, 28595, 28994, 32809, 40033, 41420, 42140, 46870, 53410, 57190, 57988, 65618, 72485, 80066, 89053, 93740, 101479, 106820, 114380, 131236, 144970, 160132, 164045, 178106, 200165, 202958, 229663, 289940, 328090, 356212, 400330, 405916, 445265, 459326, 507395, 623371, 656180, 800660, 890530, 918652, 1014790, 1148315, 1246742, 1781060, 2029580, 2296630, 2493484, 3116855, 4363597, 4593260, 6233710, 8727194, 12467420, 17454388, 21817985, 43635970, 87271940]

約数ペア:

[(1, 87271940), (2, 43635970), (4, 21817985), (5, 17454388), (7, 12467420), (10, 8727194), (14, 6233710), (19, 4593260), (20, 4363597), (28, 3116855), (35, 2493484), (38, 2296630), (43, 2029580), (49, 1781060), (70, 1246742), (76, 1148315), (86, 1014790), (95, 918652), (98, 890530), (109, 800660), (133, 656180), (140, 623371), (172, 507395), (190, 459326), (196, 445265), (215, 405916), (218, 400330), (245, 356212), (266, 328090), (301, 289940), (380, 229663), (430, 202958), (436, 200165), (490, 178106), (532, 164045), (545, 160132), (602, 144970), (665, 131236), (763, 114380), (817, 106820), (860, 101479), (931, 93740), (980, 89053), (1090, 80066), (1204, 72485), (1330, 65618), (1505, 57988), (1526, 57190), (1634, 53410), (1862, 46870), (2071, 42140), (2107, 41420), (2180, 40033), (2660, 32809), (3010, 28994), (3052, 28595), (3268, 26705), (3724, 23435), (3815, 22876), (4085, 21364), (4142, 21070), (4214, 20710), (4655, 18748), (4687, 18620), (5341, 16340), (5719, 15260), (6020, 14497), (7630, 11438), (8170, 10682), (8284, 10535), (8428, 10355), (9310, 9374)]