20991264

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{31237}}^1$

素因数の和:31257

約数の個数: 48

約数和(自身を含む): 62975808

約数和(自身を除く): 41984544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672, 31237, 62474, 93711, 124948, 187422, 218659, 249896, 374844, 437318, 499792, 655977, 749688, 874636, 999584, 1311954, 1499376, 1749272, 2623908, 2998752, 3498544, 5247816, 6997088, 10495632, 20991264]

約数ペア:

[(1, 20991264), (2, 10495632), (3, 6997088), (4, 5247816), (6, 3498544), (7, 2998752), (8, 2623908), (12, 1749272), (14, 1499376), (16, 1311954), (21, 999584), (24, 874636), (28, 749688), (32, 655977), (42, 499792), (48, 437318), (56, 374844), (84, 249896), (96, 218659), (112, 187422), (168, 124948), (224, 93711), (336, 62474), (672, 31237)]