21645555

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:995

約数の個数: 32

約数和(自身を含む): 36436224

約数和(自身を除く): 14790669

約数列:

[1, 3, 5, 15, 37, 43, 111, 129, 185, 215, 555, 645, 907, 1591, 2721, 4535, 4773, 7955, 13605, 23865, 33559, 39001, 100677, 117003, 167795, 195005, 503385, 585015, 1443037, 4329111, 7215185, 21645555]

約数ペア:

[(1, 21645555), (3, 7215185), (5, 4329111), (15, 1443037), (37, 585015), (43, 503385), (111, 195005), (129, 167795), (185, 117003), (215, 100677), (555, 39001), (645, 33559), (907, 23865), (1591, 13605), (2721, 7955), (4535, 4773)]