638567998

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{6703}}^1$

素因数の和:6856

約数の個数: 32

約数和(自身を含む): 1061913600

約数和(自身を除く): 423345602

約数列:

[1, 2, 19, 23, 38, 46, 109, 218, 437, 874, 2071, 2507, 4142, 5014, 6703, 13406, 47633, 95266, 127357, 154169, 254714, 308338, 730627, 1461254, 2929211, 5858422, 13881913, 16804421, 27763826, 33608842, 319283999, 638567998]

約数ペア:

[(1, 638567998), (2, 319283999), (19, 33608842), (23, 27763826), (38, 16804421), (46, 13881913), (109, 5858422), (218, 2929211), (437, 1461254), (874, 730627), (2071, 308338), (2507, 254714), (4142, 154169), (5014, 127357), (6703, 95266), (13406, 47633)]