209867480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73897}}^1$

素因数の和:73979

約数の個数: 32

約数和(自身を含む): 478859040

約数和(自身を除く): 268991560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 73897, 147794, 295588, 369485, 591176, 738970, 1477940, 2955880, 5246687, 10493374, 20986748, 26233435, 41973496, 52466870, 104933740, 209867480]

約数ペア:

[(1, 209867480), (2, 104933740), (4, 52466870), (5, 41973496), (8, 26233435), (10, 20986748), (20, 10493374), (40, 5246687), (71, 2955880), (142, 1477940), (284, 738970), (355, 591176), (568, 369485), (710, 295588), (1420, 147794), (2840, 73897)]