27980560

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{881}}^1$

素因数の和:1291

約数の個数: 40

約数和(自身を含む): 65292696

約数和(自身を除く): 37312136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 881, 1588, 1762, 1985, 3176, 3524, 3970, 4405, 6352, 7048, 7940, 8810, 14096, 15880, 17620, 31760, 35240, 70480, 349757, 699514, 1399028, 1748785, 2798056, 3497570, 5596112, 6995140, 13990280, 27980560]

約数ペア:

[(1, 27980560), (2, 13990280), (4, 6995140), (5, 5596112), (8, 3497570), (10, 2798056), (16, 1748785), (20, 1399028), (40, 699514), (80, 349757), (397, 70480), (794, 35240), (881, 31760), (1588, 17620), (1762, 15880), (1985, 14096), (3176, 8810), (3524, 7940), (3970, 7048), (4405, 6352)]