64645960

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{8929}}^1$

素因数の和:9121

約数の個数: 32

約数和(自身を含む): 146273400

約数和(自身を除く): 81627440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 8929, 17858, 35716, 44645, 71432, 89290, 178580, 357160, 1616149, 3232298, 6464596, 8080745, 12929192, 16161490, 32322980, 64645960]

約数ペア:

[(1, 64645960), (2, 32322980), (4, 16161490), (5, 12929192), (8, 8080745), (10, 6464596), (20, 3232298), (40, 1616149), (181, 357160), (362, 178580), (724, 89290), (905, 71432), (1448, 44645), (1810, 35716), (3620, 17858), (7240, 8929)]