21109190

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{461}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 40249440

約数和(自身を除く): 19140250

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 241, 461, 482, 922, 1205, 2305, 2410, 4579, 4610, 8759, 9158, 17518, 22895, 43795, 45790, 87590, 111101, 222202, 555505, 1111010, 2110919, 4221838, 10554595, 21109190]

約数ペア:

[(1, 21109190), (2, 10554595), (5, 4221838), (10, 2110919), (19, 1111010), (38, 555505), (95, 222202), (190, 111101), (241, 87590), (461, 45790), (482, 43795), (922, 22895), (1205, 17518), (2305, 9158), (2410, 8759), (4579, 4610)]