21505065

素因数分解:

$3^1\times 5^1\times {\mathrm{859}}^1\times {\mathrm{1669}}^1$

素因数の和:2536

約数の個数: 16

約数和(自身を含む): 34468800

約数和(自身を除く): 12963735

約数列:

[1, 3, 5, 15, 859, 1669, 2577, 4295, 5007, 8345, 12885, 25035, 1433671, 4301013, 7168355, 21505065]

約数ペア:

[(1, 21505065), (3, 7168355), (5, 4301013), (15, 1433671), (859, 25035), (1669, 12885), (2577, 8345), (4295, 5007)]