889350040

素因数分解:

$2^3\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{16831}}^1$

素因数の和:18163

約数の個数: 32

約数和(自身を含む): 2002671360

約数和(自身を除く): 1113321320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1321, 2642, 5284, 6605, 10568, 13210, 16831, 26420, 33662, 52840, 67324, 84155, 134648, 168310, 336620, 673240, 22233751, 44467502, 88935004, 111168755, 177870008, 222337510, 444675020, 889350040]

約数ペア:

[(1, 889350040), (2, 444675020), (4, 222337510), (5, 177870008), (8, 111168755), (10, 88935004), (20, 44467502), (40, 22233751), (1321, 673240), (2642, 336620), (5284, 168310), (6605, 134648), (10568, 84155), (13210, 67324), (16831, 52840), (26420, 33662)]