21281312

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51157}}^1$

素因数の和:51180

約数の個数: 24

約数和(自身を含む): 45121356

約数和(自身を除く): 23840044

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51157, 102314, 204628, 409256, 665041, 818512, 1330082, 1637024, 2660164, 5320328, 10640656, 21281312]

約数ペア:

[(1, 21281312), (2, 10640656), (4, 5320328), (8, 2660164), (13, 1637024), (16, 1330082), (26, 818512), (32, 665041), (52, 409256), (104, 204628), (208, 102314), (416, 51157)]