21561246

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{811}}^1$

素因数の和:1037

約数の個数: 48

約数和(自身を含む): 53708928

約数和(自身を除く): 32147682

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 211, 422, 633, 811, 1266, 1477, 1622, 1899, 2433, 2954, 3798, 4431, 4866, 5677, 7299, 8862, 11354, 13293, 14598, 17031, 26586, 34062, 51093, 102186, 171121, 342242, 513363, 1026726, 1197847, 1540089, 2395694, 3080178, 3593541, 7187082, 10780623, 21561246]

約数ペア:

[(1, 21561246), (2, 10780623), (3, 7187082), (6, 3593541), (7, 3080178), (9, 2395694), (14, 1540089), (18, 1197847), (21, 1026726), (42, 513363), (63, 342242), (126, 171121), (211, 102186), (422, 51093), (633, 34062), (811, 26586), (1266, 17031), (1477, 14598), (1622, 13293), (1899, 11354), (2433, 8862), (2954, 7299), (3798, 5677), (4431, 4866)]