21808185

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29671}}^1$

素因数の和:29693

約数の個数: 24

約数和(自身を含む): 40591296

約数和(自身を除く): 18783111

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29671, 89013, 148355, 207697, 445065, 623091, 1038485, 1453879, 3115455, 4361637, 7269395, 21808185]

約数ペア:

[(1, 21808185), (3, 7269395), (5, 4361637), (7, 3115455), (15, 1453879), (21, 1038485), (35, 623091), (49, 445065), (105, 207697), (147, 148355), (245, 89013), (735, 29671)]