21119080

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2917}}^1$

素因数の和:3109

約数の個数: 32

約数和(自身を含む): 47796840

約数和(自身を除く): 26677760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2917, 3620, 5834, 7240, 11668, 14585, 23336, 29170, 58340, 116680, 527977, 1055954, 2111908, 2639885, 4223816, 5279770, 10559540, 21119080]

約数ペア:

[(1, 21119080), (2, 10559540), (4, 5279770), (5, 4223816), (8, 2639885), (10, 2111908), (20, 1055954), (40, 527977), (181, 116680), (362, 58340), (724, 29170), (905, 23336), (1448, 14585), (1810, 11668), (2917, 7240), (3620, 5834)]