19891642

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 12767558

約数列:

[1, 2, 23, 41, 46, 53, 82, 106, 199, 398, 943, 1219, 1886, 2173, 2438, 4346, 4577, 8159, 9154, 10547, 16318, 21094, 49979, 99958, 187657, 242581, 375314, 432427, 485162, 864854, 9945821, 19891642]

約数ペア:

[(1, 19891642), (2, 9945821), (23, 864854), (41, 485162), (46, 432427), (53, 375314), (82, 242581), (106, 187657), (199, 99958), (398, 49979), (943, 21094), (1219, 16318), (1886, 10547), (2173, 9154), (2438, 8159), (4346, 4577)]