20983515

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28549}}^1$

素因数の和:28571

約数の個数: 24

約数和(自身を含む): 39056400

約数和(自身を除く): 18072885

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28549, 85647, 142745, 199843, 428235, 599529, 999215, 1398901, 2997645, 4196703, 6994505, 20983515]

約数ペア:

[(1, 20983515), (3, 6994505), (5, 4196703), (7, 2997645), (15, 1398901), (21, 999215), (35, 599529), (49, 428235), (105, 199843), (147, 142745), (245, 85647), (735, 28549)]