20621211

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 30173040

約数和(自身を除く): 9551829

約数列:

[1, 3, 13, 39, 89, 169, 267, 457, 507, 1157, 1371, 3471, 5941, 15041, 17823, 40673, 45123, 77233, 122019, 231699, 528749, 1586247, 6873737, 20621211]

約数ペア:

[(1, 20621211), (3, 6873737), (13, 1586247), (39, 528749), (89, 231699), (169, 122019), (267, 77233), (457, 45123), (507, 40673), (1157, 17823), (1371, 15041), (3471, 5941)]