21813405

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{30941}}^1$

素因数の和:30996

約数の個数: 16

約数和(自身を含む): 35645184

約数和(自身を除く): 13831779

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 30941, 92823, 154705, 464115, 1454227, 4362681, 7271135, 21813405]

約数ペア:

[(1, 21813405), (3, 7271135), (5, 4362681), (15, 1454227), (47, 464115), (141, 154705), (235, 92823), (705, 30941)]