21190772

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1109}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 39440520

約数和(自身を除く): 18249748

約数列:

[1, 2, 4, 17, 34, 68, 281, 562, 1109, 1124, 2218, 4436, 4777, 9554, 18853, 19108, 37706, 75412, 311629, 623258, 1246516, 5297693, 10595386, 21190772]

約数ペア:

[(1, 21190772), (2, 10595386), (4, 5297693), (17, 1246516), (34, 623258), (68, 311629), (281, 75412), (562, 37706), (1109, 19108), (1124, 18853), (2218, 9554), (4436, 4777)]