21204760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27901}}^1$

素因数の和:27931

約数の個数: 32

約数和(自身を含む): 50223600

約数和(自身を除く): 29018840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27901, 55802, 111604, 139505, 223208, 279010, 530119, 558020, 1060238, 1116040, 2120476, 2650595, 4240952, 5301190, 10602380, 21204760]

約数ペア:

[(1, 21204760), (2, 10602380), (4, 5301190), (5, 4240952), (8, 2650595), (10, 2120476), (19, 1116040), (20, 1060238), (38, 558020), (40, 530119), (76, 279010), (95, 223208), (152, 139505), (190, 111604), (380, 55802), (760, 27901)]