21582680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77081}}^1$

素因数の和:77099

約数の個数: 32

約数和(自身を含む): 55499040

約数和(自身を除く): 33916360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77081, 154162, 308324, 385405, 539567, 616648, 770810, 1079134, 1541620, 2158268, 2697835, 3083240, 4316536, 5395670, 10791340, 21582680]

約数ペア:

[(1, 21582680), (2, 10791340), (4, 5395670), (5, 4316536), (7, 3083240), (8, 2697835), (10, 2158268), (14, 1541620), (20, 1079134), (28, 770810), (35, 616648), (40, 539567), (56, 385405), (70, 308324), (140, 154162), (280, 77081)]