21291284253

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{19489}}^1$

素因数の和:19809

約数の個数: 32

約数和(自身を含む): 30176133120

約数和(自身を除く): 8884848867

約数列:

[1, 3, 23, 69, 71, 213, 223, 669, 1633, 4899, 5129, 15387, 15833, 19489, 47499, 58467, 364159, 448247, 1092477, 1344741, 1383719, 4151157, 4346047, 13038141, 31825537, 95476611, 99959081, 299877243, 308569337, 925708011, 7097094751, 21291284253]

約数ペア:

[(1, 21291284253), (3, 7097094751), (23, 925708011), (69, 308569337), (71, 299877243), (213, 99959081), (223, 95476611), (669, 31825537), (1633, 13038141), (4899, 4346047), (5129, 4151157), (15387, 1383719), (15833, 1344741), (19489, 1092477), (47499, 448247), (58467, 364159)]