20812840

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8819}}^1$

素因数の和:8889

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 26815160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8819, 17638, 35276, 44095, 70552, 88190, 176380, 352760, 520321, 1040642, 2081284, 2601605, 4162568, 5203210, 10406420, 20812840]

約数ペア:

[(1, 20812840), (2, 10406420), (4, 5203210), (5, 4162568), (8, 2601605), (10, 2081284), (20, 1040642), (40, 520321), (59, 352760), (118, 176380), (236, 88190), (295, 70552), (472, 44095), (590, 35276), (1180, 17638), (2360, 8819)]