81240020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{140069}}^1$

素因数の和:140107

約数の個数: 24

約数和(自身を含む): 176488200

約数和(自身を除く): 95248180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 140069, 280138, 560276, 700345, 1400690, 2801380, 4062001, 8124002, 16248004, 20310005, 40620010, 81240020]

約数ペア:

[(1, 81240020), (2, 40620010), (4, 20310005), (5, 16248004), (10, 8124002), (20, 4062001), (29, 2801380), (58, 1400690), (116, 700345), (145, 560276), (290, 280138), (580, 140069)]