64620040

素因数分解:

$2^3\times 5^1\times {\mathrm{1615501}}^1$

素因数の和:1615512

約数の個数: 16

約数和(自身を含む): 145395180

約数和(自身を除く): 80775140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1615501, 3231002, 6462004, 8077505, 12924008, 16155010, 32310020, 64620040]

約数ペア:

[(1, 64620040), (2, 32310020), (4, 16155010), (5, 12924008), (8, 8077505), (10, 6462004), (20, 3231002), (40, 1615501)]