19946992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2339}}^1$

素因数の和:2401

約数の個数: 40

約数和(自身を含む): 42653520

約数和(自身を除く): 22706528

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2339, 4264, 4678, 8528, 9356, 18712, 30407, 37424, 60814, 95899, 121628, 191798, 243256, 383596, 486512, 767192, 1246687, 1534384, 2493374, 4986748, 9973496, 19946992]

約数ペア:

[(1, 19946992), (2, 9973496), (4, 4986748), (8, 2493374), (13, 1534384), (16, 1246687), (26, 767192), (41, 486512), (52, 383596), (82, 243256), (104, 191798), (164, 121628), (208, 95899), (328, 60814), (533, 37424), (656, 30407), (1066, 18712), (2132, 9356), (2339, 8528), (4264, 4678)]