28207431

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12101}}^1$

素因数の和:12151

約数の個数: 24

約数和(自身を含む): 47827104

約数和(自身を除く): 19619673

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 12101, 36303, 84707, 108909, 254121, 447737, 762363, 1343211, 3134159, 4029633, 9402477, 28207431]

約数ペア:

[(1, 28207431), (3, 9402477), (7, 4029633), (9, 3134159), (21, 1343211), (37, 762363), (63, 447737), (111, 254121), (259, 108909), (333, 84707), (777, 36303), (2331, 12101)]