21891735

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5231}}^1$

素因数の和:5276

約数の個数: 32

約数和(自身を含む): 40181760

約数和(自身を除く): 18290025

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 5231, 15693, 26155, 47079, 78465, 141237, 162161, 235395, 486483, 706185, 810805, 1459449, 2432415, 4378347, 7297245, 21891735]

約数ペア:

[(1, 21891735), (3, 7297245), (5, 4378347), (9, 2432415), (15, 1459449), (27, 810805), (31, 706185), (45, 486483), (93, 235395), (135, 162161), (155, 141237), (279, 78465), (465, 47079), (837, 26155), (1395, 15693), (4185, 5231)]