21516345

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3209}}^1$

素因数の和:3369

約数の個数: 24

約数和(自身を含む): 37557000

約数和(自身を除く): 16040655

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 3209, 6705, 9627, 16045, 28881, 48135, 144405, 478141, 1434423, 2390705, 4303269, 7172115, 21516345]

約数ペア:

[(1, 21516345), (3, 7172115), (5, 4303269), (9, 2390705), (15, 1434423), (45, 478141), (149, 144405), (447, 48135), (745, 28881), (1341, 16045), (2235, 9627), (3209, 6705)]