21420160

素因数分解:

$2^7\times 5^1\times {\mathrm{33469}}^1$

素因数の和:33488

約数の個数: 32

約数和(自身を含む): 51209100

約数和(自身を除く): 29788940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33469, 66938, 133876, 167345, 267752, 334690, 535504, 669380, 1071008, 1338760, 2142016, 2677520, 4284032, 5355040, 10710080, 21420160]

約数ペア:

[(1, 21420160), (2, 10710080), (4, 5355040), (5, 4284032), (8, 2677520), (10, 2142016), (16, 1338760), (20, 1071008), (32, 669380), (40, 535504), (64, 334690), (80, 267752), (128, 167345), (160, 133876), (320, 66938), (640, 33469)]