80439380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1039}}^1$

素因数の和:1141

約数の個数: 72

約数和(自身を含む): 199180800

約数和(自身を除く): 118741420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 980, 1039, 1106, 1580, 2078, 2212, 2765, 3871, 4156, 5195, 5530, 7273, 7742, 10390, 11060, 14546, 15484, 19355, 20780, 29092, 36365, 38710, 50911, 72730, 77420, 82081, 101822, 145460, 164162, 203644, 254555, 328324, 410405, 509110, 574567, 820810, 1018220, 1149134, 1641620, 2298268, 2872835, 4021969, 5745670, 8043938, 11491340, 16087876, 20109845, 40219690, 80439380]

約数ペア:

[(1, 80439380), (2, 40219690), (4, 20109845), (5, 16087876), (7, 11491340), (10, 8043938), (14, 5745670), (20, 4021969), (28, 2872835), (35, 2298268), (49, 1641620), (70, 1149134), (79, 1018220), (98, 820810), (140, 574567), (158, 509110), (196, 410405), (245, 328324), (316, 254555), (395, 203644), (490, 164162), (553, 145460), (790, 101822), (980, 82081), (1039, 77420), (1106, 72730), (1580, 50911), (2078, 38710), (2212, 36365), (2765, 29092), (3871, 20780), (4156, 19355), (5195, 15484), (5530, 14546), (7273, 11060), (7742, 10390)]