21887955

素因数分解:

$3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2221}}^1$

素因数の和:2308

約数の個数: 32

約数和(自身を含む): 39462720

約数和(自身を除く): 17574765

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 135, 219, 365, 657, 1095, 1971, 2221, 3285, 6663, 9855, 11105, 19989, 33315, 59967, 99945, 162133, 299835, 486399, 810665, 1459197, 2431995, 4377591, 7295985, 21887955]

約数ペア:

[(1, 21887955), (3, 7295985), (5, 4377591), (9, 2431995), (15, 1459197), (27, 810665), (45, 486399), (73, 299835), (135, 162133), (219, 99945), (365, 59967), (657, 33315), (1095, 19989), (1971, 11105), (2221, 9855), (3285, 6663)]