21000751941

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{159361}}^1$

素因数の和:159517

約数の個数: 32

約数和(自身を含む): 31413437440

約数和(自身を除く): 10412685499

約数列:

[1, 3, 13, 31, 39, 93, 109, 327, 403, 1209, 1417, 3379, 4251, 10137, 43927, 131781, 159361, 478083, 2071693, 4940191, 6215079, 14820573, 17370349, 52111047, 64222483, 192667449, 225814537, 538480819, 677443611, 1615442457, 7000250647, 21000751941]

約数ペア:

[(1, 21000751941), (3, 7000250647), (13, 1615442457), (31, 677443611), (39, 538480819), (93, 225814537), (109, 192667449), (327, 64222483), (403, 52111047), (1209, 17370349), (1417, 14820573), (3379, 6215079), (4251, 4940191), (10137, 2071693), (43927, 478083), (131781, 159361)]