21126352

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{601}}^1$

素因数の和:648

約数の個数: 40

約数和(自身を含む): 44415560

約数和(自身を除く): 23289208

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 601, 676, 1202, 1352, 2197, 2404, 2704, 4394, 4808, 7813, 8788, 9616, 15626, 17576, 31252, 35152, 62504, 101569, 125008, 203138, 406276, 812552, 1320397, 1625104, 2640794, 5281588, 10563176, 21126352]

約数ペア:

[(1, 21126352), (2, 10563176), (4, 5281588), (8, 2640794), (13, 1625104), (16, 1320397), (26, 812552), (52, 406276), (104, 203138), (169, 125008), (208, 101569), (338, 62504), (601, 35152), (676, 31252), (1202, 17576), (1352, 15626), (2197, 9616), (2404, 8788), (2704, 7813), (4394, 4808)]