21742605

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16661}}^1$

素因数の和:16701

約数の個数: 24

約数和(自身を含む): 38989080

約数和(自身を除く): 17246475

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 16661, 49983, 83305, 149949, 249915, 483169, 749745, 1449507, 2415845, 4348521, 7247535, 21742605]

約数ペア:

[(1, 21742605), (3, 7247535), (5, 4348521), (9, 2415845), (15, 1449507), (29, 749745), (45, 483169), (87, 249915), (145, 149949), (261, 83305), (435, 49983), (1305, 16661)]