21496628

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^2\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 40524960

約数和(自身を除く): 19028332

約数列:

[1, 2, 4, 23, 41, 46, 82, 92, 139, 164, 278, 556, 943, 1681, 1886, 3197, 3362, 3772, 5699, 6394, 6724, 11398, 12788, 22796, 38663, 77326, 131077, 154652, 233659, 262154, 467318, 524308, 934636, 5374157, 10748314, 21496628]

約数ペア:

[(1, 21496628), (2, 10748314), (4, 5374157), (23, 934636), (41, 524308), (46, 467318), (82, 262154), (92, 233659), (139, 154652), (164, 131077), (278, 77326), (556, 38663), (943, 22796), (1681, 12788), (1886, 11398), (3197, 6724), (3362, 6394), (3772, 5699)]