21019011

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11467}}^1$

素因数の和:11530

約数の個数: 16

約数和(自身を含む): 30825984

約数和(自身を除く): 9806973

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11467, 34401, 149071, 447213, 538949, 1616847, 7006337, 21019011]

約数ペア:

[(1, 21019011), (3, 7006337), (13, 1616847), (39, 538949), (47, 447213), (141, 149071), (611, 34401), (1833, 11467)]