21000356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1811}}^1$

素因数の和:2051

約数の個数: 24

約数和(自身を含む): 39777024

約数和(自身を除く): 18776668

約数列:

[1, 2, 4, 13, 26, 52, 223, 446, 892, 1811, 2899, 3622, 5798, 7244, 11596, 23543, 47086, 94172, 403853, 807706, 1615412, 5250089, 10500178, 21000356]

約数ペア:

[(1, 21000356), (2, 10500178), (4, 5250089), (13, 1615412), (26, 807706), (52, 403853), (223, 94172), (446, 47086), (892, 23543), (1811, 11596), (2899, 7244), (3622, 5798)]