21507530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8501}}^1$

素因数の和:8542

約数の個数: 32

約数和(自身を含む): 44074368

約数和(自身を除く): 22566838

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8501, 17002, 42505, 85010, 93511, 187022, 195523, 391046, 467555, 935110, 977615, 1955230, 2150753, 4301506, 10753765, 21507530]

約数ペア:

[(1, 21507530), (2, 10753765), (5, 4301506), (10, 2150753), (11, 1955230), (22, 977615), (23, 935110), (46, 467555), (55, 391046), (110, 195523), (115, 187022), (230, 93511), (253, 85010), (506, 42505), (1265, 17002), (2530, 8501)]