21174928

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77849}}^1$

素因数の和:77874

約数の個数: 20

約数和(自身を含む): 43440300

約数和(自身を除く): 22265372

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77849, 155698, 311396, 622792, 1245584, 1323433, 2646866, 5293732, 10587464, 21174928]

約数ペア:

[(1, 21174928), (2, 10587464), (4, 5293732), (8, 2646866), (16, 1323433), (17, 1245584), (34, 622792), (68, 311396), (136, 155698), (272, 77849)]