21812730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1493}}^1$

素因数の和:1990

約数の個数: 32

約数和(自身を含む): 52493184

約数和(自身を除く): 30680454

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 487, 974, 1461, 1493, 2435, 2922, 2986, 4479, 4870, 7305, 7465, 8958, 14610, 14930, 22395, 44790, 727091, 1454182, 2181273, 3635455, 4362546, 7270910, 10906365, 21812730]

約数ペア:

[(1, 21812730), (2, 10906365), (3, 7270910), (5, 4362546), (6, 3635455), (10, 2181273), (15, 1454182), (30, 727091), (487, 44790), (974, 22395), (1461, 14930), (1493, 14610), (2435, 8958), (2922, 7465), (2986, 7305), (4479, 4870)]