19857916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 19260548

約数列:

[1, 2, 4, 13, 26, 43, 52, 83, 86, 107, 166, 172, 214, 332, 428, 559, 1079, 1118, 1391, 2158, 2236, 2782, 3569, 4316, 4601, 5564, 7138, 8881, 9202, 14276, 17762, 18404, 35524, 46397, 59813, 92794, 115453, 119626, 185588, 230906, 239252, 381883, 461812, 763766, 1527532, 4964479, 9928958, 19857916]

約数ペア:

[(1, 19857916), (2, 9928958), (4, 4964479), (13, 1527532), (26, 763766), (43, 461812), (52, 381883), (83, 239252), (86, 230906), (107, 185588), (166, 119626), (172, 115453), (214, 92794), (332, 59813), (428, 46397), (559, 35524), (1079, 18404), (1118, 17762), (1391, 14276), (2158, 9202), (2236, 8881), (2782, 7138), (3569, 5564), (4316, 4601)]