21191535

素因数分解:

$3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6451}}^1$

素因数の和:6535

約数の個数: 24

約数和(自身を含む): 37240944

約数和(自身を除く): 16049409

約数列:

[1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095, 3285, 6451, 19353, 32255, 58059, 96765, 290295, 470923, 1412769, 2354615, 4238307, 7063845, 21191535]

約数ペア:

[(1, 21191535), (3, 7063845), (5, 4238307), (9, 2354615), (15, 1412769), (45, 470923), (73, 290295), (219, 96765), (365, 58059), (657, 32255), (1095, 19353), (3285, 6451)]