21905404

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6703}}^1$

素因数の和:6769

約数の個数: 24

約数和(自身を含む): 41296640

約数和(自身を除く): 19391236

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 817, 1634, 3268, 6703, 13406, 26812, 127357, 254714, 288229, 509428, 576458, 1152916, 5476351, 10952702, 21905404]

約数ペア:

[(1, 21905404), (2, 10952702), (4, 5476351), (19, 1152916), (38, 576458), (43, 509428), (76, 288229), (86, 254714), (172, 127357), (817, 26812), (1634, 13406), (3268, 6703)]