20725520

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4391}}^1$

素因数の和:4463

約数の個数: 40

約数和(自身を含む): 49014720

約数和(自身を除く): 28289200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4391, 4720, 8782, 17564, 21955, 35128, 43910, 70256, 87820, 175640, 259069, 351280, 518138, 1036276, 1295345, 2072552, 2590690, 4145104, 5181380, 10362760, 20725520]

約数ペア:

[(1, 20725520), (2, 10362760), (4, 5181380), (5, 4145104), (8, 2590690), (10, 2072552), (16, 1295345), (20, 1036276), (40, 518138), (59, 351280), (80, 259069), (118, 175640), (236, 87820), (295, 70256), (472, 43910), (590, 35128), (944, 21955), (1180, 17564), (2360, 8782), (4391, 4720)]