21693904

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79757}}^1$

素因数の和:79782

約数の個数: 20

約数和(自身を含む): 44504964

約数和(自身を除く): 22811060

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79757, 159514, 319028, 638056, 1276112, 1355869, 2711738, 5423476, 10846952, 21693904]

約数ペア:

[(1, 21693904), (2, 10846952), (4, 5423476), (8, 2711738), (16, 1355869), (17, 1276112), (34, 638056), (68, 319028), (136, 159514), (272, 79757)]