51721160

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3257}}^1$

素因数の和:3665

約数の個数: 32

約数和(自身を含む): 116701560

約数和(自身を除く): 64980400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3257, 3970, 6514, 7940, 13028, 15880, 16285, 26056, 32570, 65140, 130280, 1293029, 2586058, 5172116, 6465145, 10344232, 12930290, 25860580, 51721160]

約数ペア:

[(1, 51721160), (2, 25860580), (4, 12930290), (5, 10344232), (8, 6465145), (10, 5172116), (20, 2586058), (40, 1293029), (397, 130280), (794, 65140), (1588, 32570), (1985, 26056), (3176, 16285), (3257, 15880), (3970, 13028), (6514, 7940)]