20281840

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4297}}^1$

素因数の和:4369

約数の個数: 40

約数和(自身を含む): 47965680

約数和(自身を除く): 27683840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4297, 4720, 8594, 17188, 21485, 34376, 42970, 68752, 85940, 171880, 253523, 343760, 507046, 1014092, 1267615, 2028184, 2535230, 4056368, 5070460, 10140920, 20281840]

約数ペア:

[(1, 20281840), (2, 10140920), (4, 5070460), (5, 4056368), (8, 2535230), (10, 2028184), (16, 1267615), (20, 1014092), (40, 507046), (59, 343760), (80, 253523), (118, 171880), (236, 85940), (295, 68752), (472, 42970), (590, 34376), (944, 21485), (1180, 17188), (2360, 8594), (4297, 4720)]