19428344

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2099}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 20261656

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2099, 2314, 4198, 4628, 8396, 9256, 16792, 27287, 54574, 109148, 186811, 218296, 373622, 747244, 1494488, 2428543, 4857086, 9714172, 19428344]

約数ペア:

[(1, 19428344), (2, 9714172), (4, 4857086), (8, 2428543), (13, 1494488), (26, 747244), (52, 373622), (89, 218296), (104, 186811), (178, 109148), (356, 54574), (712, 27287), (1157, 16792), (2099, 9256), (2314, 8396), (4198, 4628)]