21015790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91373}}^1$

素因数の和:91403

約数の個数: 16

約数和(自身を含む): 39473568

約数和(自身を除く): 18457778

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91373, 182746, 456865, 913730, 2101579, 4203158, 10507895, 21015790]

約数ペア:

[(1, 21015790), (2, 10507895), (5, 4203158), (10, 2101579), (23, 913730), (46, 456865), (115, 182746), (230, 91373)]