81631060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2687}}^1$

素因数の和:2741

約数の個数: 72

約数和(自身を含む): 205922304

約数和(自身を除く): 124291244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 2687, 3038, 4340, 5374, 6076, 7595, 10748, 13435, 15190, 18809, 26870, 30380, 37618, 53740, 75236, 83297, 94045, 131663, 166594, 188090, 263326, 333188, 376180, 416485, 526652, 583079, 658315, 832970, 1166158, 1316630, 1665940, 2332316, 2633260, 2915395, 4081553, 5830790, 8163106, 11661580, 16326212, 20407765, 40815530, 81631060]

約数ペア:

[(1, 81631060), (2, 40815530), (4, 20407765), (5, 16326212), (7, 11661580), (10, 8163106), (14, 5830790), (20, 4081553), (28, 2915395), (31, 2633260), (35, 2332316), (49, 1665940), (62, 1316630), (70, 1166158), (98, 832970), (124, 658315), (140, 583079), (155, 526652), (196, 416485), (217, 376180), (245, 333188), (310, 263326), (434, 188090), (490, 166594), (620, 131663), (868, 94045), (980, 83297), (1085, 75236), (1519, 53740), (2170, 37618), (2687, 30380), (3038, 26870), (4340, 18809), (5374, 15190), (6076, 13435), (7595, 10748)]