21890812

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{2549}}^1$

素因数の和:2685

約数の個数: 24

約数和(自身を含む): 40698000

約数和(自身を除く): 18807188

約数列:

[1, 2, 4, 19, 38, 76, 113, 226, 452, 2147, 2549, 4294, 5098, 8588, 10196, 48431, 96862, 193724, 288037, 576074, 1152148, 5472703, 10945406, 21890812]

約数ペア:

[(1, 21890812), (2, 10945406), (4, 5472703), (19, 1152148), (38, 576074), (76, 288037), (113, 193724), (226, 96862), (452, 48431), (2147, 10196), (2549, 8588), (4294, 5098)]