21730947

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2099}}^1$

素因数の和:2155

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14557053

約数列:

[1, 3, 7, 17, 21, 29, 51, 87, 119, 203, 357, 493, 609, 1479, 2099, 3451, 6297, 10353, 14693, 35683, 44079, 60871, 107049, 182613, 249781, 426097, 749343, 1034807, 1278291, 3104421, 7243649, 21730947]

約数ペア:

[(1, 21730947), (3, 7243649), (7, 3104421), (17, 1278291), (21, 1034807), (29, 749343), (51, 426097), (87, 249781), (119, 182613), (203, 107049), (357, 60871), (493, 44079), (609, 35683), (1479, 14693), (2099, 10353), (3451, 6297)]