21752656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79973}}^1$

素因数の和:79998

約数の個数: 20

約数和(自身を含む): 44625492

約数和(自身を除く): 22872836

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79973, 159946, 319892, 639784, 1279568, 1359541, 2719082, 5438164, 10876328, 21752656]

約数ペア:

[(1, 21752656), (2, 10876328), (4, 5438164), (8, 2719082), (16, 1359541), (17, 1279568), (34, 639784), (68, 319892), (136, 159946), (272, 79973)]