21538270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3853}}^1$

素因数の和:3916

約数の個数: 32

約数和(自身を含む): 42733152

約数和(自身を除く): 21194882

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3853, 5590, 7706, 19265, 38530, 50089, 100178, 165679, 250445, 331358, 500890, 828395, 1656790, 2153827, 4307654, 10769135, 21538270]

約数ペア:

[(1, 21538270), (2, 10769135), (5, 4307654), (10, 2153827), (13, 1656790), (26, 828395), (43, 500890), (65, 331358), (86, 250445), (130, 165679), (215, 100178), (430, 50089), (559, 38530), (1118, 19265), (2795, 7706), (3853, 5590)]