21897955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{487}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 29145312

約数和(自身を除く): 7247357

約数列:

[1, 5, 17, 23, 85, 115, 391, 487, 529, 1955, 2435, 2645, 8279, 8993, 11201, 41395, 44965, 56005, 190417, 257623, 952085, 1288115, 4379591, 21897955]

約数ペア:

[(1, 21897955), (5, 4379591), (17, 1288115), (23, 952085), (85, 257623), (115, 190417), (391, 56005), (487, 44965), (529, 41395), (1955, 11201), (2435, 8993), (2645, 8279)]