81381800

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{9463}}^1$

素因数の和:9522

約数の個数: 48

約数和(自身を含む): 193633440

約数和(自身を除く): 112251640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 4300, 8600, 9463, 18926, 37852, 47315, 75704, 94630, 189260, 236575, 378520, 406909, 473150, 813818, 946300, 1627636, 1892600, 2034545, 3255272, 4069090, 8138180, 10172725, 16276360, 20345450, 40690900, 81381800]

約数ペア:

[(1, 81381800), (2, 40690900), (4, 20345450), (5, 16276360), (8, 10172725), (10, 8138180), (20, 4069090), (25, 3255272), (40, 2034545), (43, 1892600), (50, 1627636), (86, 946300), (100, 813818), (172, 473150), (200, 406909), (215, 378520), (344, 236575), (430, 189260), (860, 94630), (1075, 75704), (1720, 47315), (2150, 37852), (4300, 18926), (8600, 9463)]