20123128

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3229}}^1$

素因数の和:3295

約数の個数: 32

約数和(自身を含む): 40698000

約数和(自身を除く): 20574872

約数列:

[1, 2, 4, 8, 19, 38, 41, 76, 82, 152, 164, 328, 779, 1558, 3116, 3229, 6232, 6458, 12916, 25832, 61351, 122702, 132389, 245404, 264778, 490808, 529556, 1059112, 2515391, 5030782, 10061564, 20123128]

約数ペア:

[(1, 20123128), (2, 10061564), (4, 5030782), (8, 2515391), (19, 1059112), (38, 529556), (41, 490808), (76, 264778), (82, 245404), (152, 132389), (164, 122702), (328, 61351), (779, 25832), (1558, 12916), (3116, 6458), (3229, 6232)]