20530360

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7229}}^1$

素因数の和:7311

約数の個数: 32

約数和(自身を含む): 46850400

約数和(自身を除く): 26320040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7229, 14458, 28916, 36145, 57832, 72290, 144580, 289160, 513259, 1026518, 2053036, 2566295, 4106072, 5132590, 10265180, 20530360]

約数ペア:

[(1, 20530360), (2, 10265180), (4, 5132590), (5, 4106072), (8, 2566295), (10, 2053036), (20, 1026518), (40, 513259), (71, 289160), (142, 144580), (284, 72290), (355, 57832), (568, 36145), (710, 28916), (1420, 14458), (2840, 7229)]