20215173

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 30707712

約数和(自身を除く): 10492539

約数列:

[1, 3, 11, 33, 41, 67, 123, 201, 223, 451, 669, 737, 1353, 2211, 2453, 2747, 7359, 8241, 9143, 14941, 27429, 30217, 44823, 90651, 100573, 164351, 301719, 493053, 612581, 1837743, 6738391, 20215173]

約数ペア:

[(1, 20215173), (3, 6738391), (11, 1837743), (33, 612581), (41, 493053), (67, 301719), (123, 164351), (201, 100573), (223, 90651), (451, 44823), (669, 30217), (737, 27429), (1353, 14941), (2211, 9143), (2453, 8241), (2747, 7359)]