21549268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1283}}^1$

素因数の和:1336

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 23750252

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 76, 221, 247, 323, 442, 494, 646, 884, 988, 1283, 1292, 2566, 4199, 5132, 8398, 16679, 16796, 21811, 24377, 33358, 43622, 48754, 66716, 87244, 97508, 283543, 316901, 414409, 567086, 633802, 828818, 1134172, 1267604, 1657636, 5387317, 10774634, 21549268]

約数ペア:

[(1, 21549268), (2, 10774634), (4, 5387317), (13, 1657636), (17, 1267604), (19, 1134172), (26, 828818), (34, 633802), (38, 567086), (52, 414409), (68, 316901), (76, 283543), (221, 97508), (247, 87244), (323, 66716), (442, 48754), (494, 43622), (646, 33358), (884, 24377), (988, 21811), (1283, 16796), (1292, 16679), (2566, 8398), (4199, 5132)]