61521880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{219721}}^1$

素因数の和:219739

約数の個数: 32

約数和(自身を含む): 158199840

約数和(自身を除く): 96677960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 219721, 439442, 878884, 1098605, 1538047, 1757768, 2197210, 3076094, 4394420, 6152188, 7690235, 8788840, 12304376, 15380470, 30760940, 61521880]

約数ペア:

[(1, 61521880), (2, 30760940), (4, 15380470), (5, 12304376), (7, 8788840), (8, 7690235), (10, 6152188), (14, 4394420), (20, 3076094), (28, 2197210), (35, 1757768), (40, 1538047), (56, 1098605), (70, 878884), (140, 439442), (280, 219721)]