13990280

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{881}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 31593240

約数和(自身を除く): 17602960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 881, 1588, 1762, 1985, 3176, 3524, 3970, 4405, 7048, 7940, 8810, 15880, 17620, 35240, 349757, 699514, 1399028, 1748785, 2798056, 3497570, 6995140, 13990280]

約数ペア:

[(1, 13990280), (2, 6995140), (4, 3497570), (5, 2798056), (8, 1748785), (10, 1399028), (20, 699514), (40, 349757), (397, 35240), (794, 17620), (881, 15880), (1588, 8810), (1762, 7940), (1985, 7048), (3176, 4405), (3524, 3970)]