19977156

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^2\times {\mathrm{1049}}^1$

素因数の和:1105

約数の個数: 54

約数和(自身を含む): 52839150

約数和(自身を除く): 32861994

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 529, 828, 1049, 1058, 1587, 2098, 2116, 3147, 3174, 4196, 4761, 6294, 6348, 9441, 9522, 12588, 18882, 19044, 24127, 37764, 48254, 72381, 96508, 144762, 217143, 289524, 434286, 554921, 868572, 1109842, 1664763, 2219684, 3329526, 4994289, 6659052, 9988578, 19977156]

約数ペア:

[(1, 19977156), (2, 9988578), (3, 6659052), (4, 4994289), (6, 3329526), (9, 2219684), (12, 1664763), (18, 1109842), (23, 868572), (36, 554921), (46, 434286), (69, 289524), (92, 217143), (138, 144762), (207, 96508), (276, 72381), (414, 48254), (529, 37764), (828, 24127), (1049, 19044), (1058, 18882), (1587, 12588), (2098, 9522), (2116, 9441), (3147, 6348), (3174, 6294), (4196, 4761)]