128405620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31627}}^1$

素因数の和:31672

約数の個数: 48

約数和(自身を含む): 318810240

約数和(自身を除く): 190404620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 31627, 63254, 126508, 158135, 221389, 316270, 442778, 632540, 885556, 917183, 1106945, 1834366, 2213890, 3668732, 4427780, 4585915, 6420281, 9171830, 12840562, 18343660, 25681124, 32101405, 64202810, 128405620]

約数ペア:

[(1, 128405620), (2, 64202810), (4, 32101405), (5, 25681124), (7, 18343660), (10, 12840562), (14, 9171830), (20, 6420281), (28, 4585915), (29, 4427780), (35, 3668732), (58, 2213890), (70, 1834366), (116, 1106945), (140, 917183), (145, 885556), (203, 632540), (290, 442778), (406, 316270), (580, 221389), (812, 158135), (1015, 126508), (2030, 63254), (4060, 31627)]