21331555

素因数分解:

$5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4799}}^1$

素因数の和:4938

約数の個数: 16

約数和(自身を含む): 29491200

約数和(自身を除く): 8159645

約数列:

[1, 5, 7, 35, 127, 635, 889, 4445, 4799, 23995, 33593, 167965, 609473, 3047365, 4266311, 21331555]

約数ペア:

[(1, 21331555), (5, 4266311), (7, 3047365), (35, 609473), (127, 167965), (635, 33593), (889, 23995), (4445, 4799)]