21263624

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43573}}^1$

素因数の和:43640

約数の個数: 16

約数和(自身を含む): 40523820

約数和(自身を除く): 19260196

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43573, 87146, 174292, 348584, 2657953, 5315906, 10631812, 21263624]

約数ペア:

[(1, 21263624), (2, 10631812), (4, 5315906), (8, 2657953), (61, 348584), (122, 174292), (244, 87146), (488, 43573)]