20572640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11689}}^1$

素因数の和:11715

約数の個数: 48

約数和(自身を含む): 53025840

約数和(自身を除く): 32453200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11689, 23378, 46756, 58445, 93512, 116890, 128579, 187024, 233780, 257158, 374048, 467560, 514316, 642895, 935120, 1028632, 1285790, 1870240, 2057264, 2571580, 4114528, 5143160, 10286320, 20572640]

約数ペア:

[(1, 20572640), (2, 10286320), (4, 5143160), (5, 4114528), (8, 2571580), (10, 2057264), (11, 1870240), (16, 1285790), (20, 1028632), (22, 935120), (32, 642895), (40, 514316), (44, 467560), (55, 374048), (80, 257158), (88, 233780), (110, 187024), (160, 128579), (176, 116890), (220, 93512), (352, 58445), (440, 46756), (880, 23378), (1760, 11689)]