21716065

素因数分解:

$5^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{587}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 30566592

約数和(自身を除く): 8850527

約数列:

[1, 5, 7, 35, 49, 151, 245, 587, 755, 1057, 2935, 4109, 5285, 7399, 20545, 28763, 36995, 88637, 143815, 443185, 620459, 3102295, 4343213, 21716065]

約数ペア:

[(1, 21716065), (5, 4343213), (7, 3102295), (35, 620459), (49, 443185), (151, 143815), (245, 88637), (587, 36995), (755, 28763), (1057, 20545), (2935, 7399), (4109, 5285)]