21213354

素因数分解:

$2^1\times 3^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:470

約数の個数: 32

約数和(自身を含む): 43281216

約数和(自身を除く): 22067862

約数列:

[1, 2, 3, 6, 131, 137, 197, 262, 274, 393, 394, 411, 591, 786, 822, 1182, 17947, 25807, 26989, 35894, 51614, 53841, 53978, 77421, 80967, 107682, 154842, 161934, 3535559, 7071118, 10606677, 21213354]

約数ペア:

[(1, 21213354), (2, 10606677), (3, 7071118), (6, 3535559), (131, 161934), (137, 154842), (197, 107682), (262, 80967), (274, 77421), (393, 53978), (394, 53841), (411, 51614), (591, 35894), (786, 26989), (822, 25807), (1182, 17947)]