19828990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1181}}^1$

素因数の和:1284

約数の個数: 32

約数和(自身を含む): 37786176

約数和(自身を除く): 17957186

約数列:

[1, 2, 5, 10, 23, 46, 73, 115, 146, 230, 365, 730, 1181, 1679, 2362, 3358, 5905, 8395, 11810, 16790, 27163, 54326, 86213, 135815, 172426, 271630, 431065, 862130, 1982899, 3965798, 9914495, 19828990]

約数ペア:

[(1, 19828990), (2, 9914495), (5, 3965798), (10, 1982899), (23, 862130), (46, 431065), (73, 271630), (115, 172426), (146, 135815), (230, 86213), (365, 54326), (730, 27163), (1181, 16790), (1679, 11810), (2362, 8395), (3358, 5905)]