380520020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{743}}^1\times {\mathrm{883}}^1$

素因数の和:1664

約数の個数: 48

約数和(自身を含む): 828696960

約数和(自身を除く): 448176940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 743, 883, 1486, 1766, 2972, 3532, 3715, 4415, 7430, 8830, 14860, 17660, 21547, 25607, 43094, 51214, 86188, 102428, 107735, 128035, 215470, 256070, 430940, 512140, 656069, 1312138, 2624276, 3280345, 6560690, 13121380, 19026001, 38052002, 76104004, 95130005, 190260010, 380520020]

約数ペア:

[(1, 380520020), (2, 190260010), (4, 95130005), (5, 76104004), (10, 38052002), (20, 19026001), (29, 13121380), (58, 6560690), (116, 3280345), (145, 2624276), (290, 1312138), (580, 656069), (743, 512140), (883, 430940), (1486, 256070), (1766, 215470), (2972, 128035), (3532, 107735), (3715, 102428), (4415, 86188), (7430, 51214), (8830, 43094), (14860, 25607), (17660, 21547)]