128702900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{14461}}^1$

素因数の和:14564

約数の個数: 36

約数和(自身を含む): 282442860

約数和(自身を除く): 153739960

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 4450, 8900, 14461, 28922, 57844, 72305, 144610, 289220, 361525, 723050, 1287029, 1446100, 2574058, 5148116, 6435145, 12870290, 25740580, 32175725, 64351450, 128702900]

約数ペア:

[(1, 128702900), (2, 64351450), (4, 32175725), (5, 25740580), (10, 12870290), (20, 6435145), (25, 5148116), (50, 2574058), (89, 1446100), (100, 1287029), (178, 723050), (356, 361525), (445, 289220), (890, 144610), (1780, 72305), (2225, 57844), (4450, 28922), (8900, 14461)]