21382245

素因数分解:

$3^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1063}}^1$

素因数の和:1226

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 16921755

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 149, 447, 745, 1063, 1341, 2235, 3189, 4023, 5315, 6705, 9567, 15945, 20115, 28701, 47835, 143505, 158387, 475161, 791935, 1425483, 2375805, 4276449, 7127415, 21382245]

約数ペア:

[(1, 21382245), (3, 7127415), (5, 4276449), (9, 2375805), (15, 1425483), (27, 791935), (45, 475161), (135, 158387), (149, 143505), (447, 47835), (745, 28701), (1063, 20115), (1341, 15945), (2235, 9567), (3189, 6705), (4023, 5315)]