81399220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{2099}}^1$

素因数の和:2392

約数の個数: 48

約数和(自身を含む): 196156800

約数和(自身を除く): 114757580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 277, 554, 1108, 1385, 1939, 2099, 2770, 3878, 4198, 5540, 7756, 8396, 9695, 10495, 14693, 19390, 20990, 29386, 38780, 41980, 58772, 73465, 146930, 293860, 581423, 1162846, 2325692, 2907115, 4069961, 5814230, 8139922, 11628460, 16279844, 20349805, 40699610, 81399220]

約数ペア:

[(1, 81399220), (2, 40699610), (4, 20349805), (5, 16279844), (7, 11628460), (10, 8139922), (14, 5814230), (20, 4069961), (28, 2907115), (35, 2325692), (70, 1162846), (140, 581423), (277, 293860), (554, 146930), (1108, 73465), (1385, 58772), (1939, 41980), (2099, 38780), (2770, 29386), (3878, 20990), (4198, 19390), (5540, 14693), (7756, 10495), (8396, 9695)]