21891184

素因数分解:

$2^4\times 7^1\times {\mathrm{195457}}^1$

素因数の和:195472

約数の個数: 20

約数和(自身を含む): 48473584

約数和(自身を除く): 26582400

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195457, 390914, 781828, 1368199, 1563656, 2736398, 3127312, 5472796, 10945592, 21891184]

約数ペア:

[(1, 21891184), (2, 10945592), (4, 5472796), (7, 3127312), (8, 2736398), (14, 1563656), (16, 1368199), (28, 781828), (56, 390914), (112, 195457)]