21525585

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1451}}^1$

素因数の和:1525

約数の個数: 32

約数和(自身を含む): 36799488

約数和(自身を除く): 15273903

約数列:

[1, 3, 5, 15, 23, 43, 69, 115, 129, 215, 345, 645, 989, 1451, 2967, 4353, 4945, 7255, 14835, 21765, 33373, 62393, 100119, 166865, 187179, 311965, 500595, 935895, 1435039, 4305117, 7175195, 21525585]

約数ペア:

[(1, 21525585), (3, 7175195), (5, 4305117), (15, 1435039), (23, 935895), (43, 500595), (69, 311965), (115, 187179), (129, 166865), (215, 100119), (345, 62393), (645, 33373), (989, 21765), (1451, 14835), (2967, 7255), (4353, 4945)]