21143680

素因数分解:

$2^7\times 5^1\times {\mathrm{33037}}^1$

素因数の和:33056

約数の個数: 32

約数和(自身を含む): 50548140

約数和(自身を除く): 29404460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33037, 66074, 132148, 165185, 264296, 330370, 528592, 660740, 1057184, 1321480, 2114368, 2642960, 4228736, 5285920, 10571840, 21143680]

約数ペア:

[(1, 21143680), (2, 10571840), (4, 5285920), (5, 4228736), (8, 2642960), (10, 2114368), (16, 1321480), (20, 1057184), (32, 660740), (40, 528592), (64, 330370), (80, 264296), (128, 165185), (160, 132148), (320, 66074), (640, 33037)]