21928515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{208843}}^1$

素因数の和:208858

約数の個数: 16

約数和(自身を含む): 40098048

約数和(自身を除く): 18169533

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 208843, 626529, 1044215, 1461901, 3132645, 4385703, 7309505, 21928515]

約数ペア:

[(1, 21928515), (3, 7309505), (5, 4385703), (7, 3132645), (15, 1461901), (21, 1044215), (35, 626529), (105, 208843)]