21572811

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6829}}^1$

素因数の和:6857

約数の個数: 24

約数和(自身を含む): 34805680

約数和(自身を除く): 13232869

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6829, 20487, 61461, 88777, 184383, 266331, 553149, 798993, 1659447, 2396979, 7190937, 21572811]

約数ペア:

[(1, 21572811), (3, 7190937), (9, 2396979), (13, 1659447), (27, 798993), (39, 553149), (81, 266331), (117, 184383), (243, 88777), (351, 61461), (1053, 20487), (3159, 6829)]