21809080

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6569}}^1$

素因数の和:6663

約数の個数: 32

約数和(自身を含む): 49669200

約数和(自身を除く): 27860120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6569, 13138, 26276, 32845, 52552, 65690, 131380, 262760, 545227, 1090454, 2180908, 2726135, 4361816, 5452270, 10904540, 21809080]

約数ペア:

[(1, 21809080), (2, 10904540), (4, 5452270), (5, 4361816), (8, 2726135), (10, 2180908), (20, 1090454), (40, 545227), (83, 262760), (166, 131380), (332, 65690), (415, 52552), (664, 32845), (830, 26276), (1660, 13138), (3320, 6569)]