21274120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75979}}^1$

素因数の和:75997

約数の個数: 32

約数和(自身を含む): 54705600

約数和(自身を除く): 33431480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75979, 151958, 303916, 379895, 531853, 607832, 759790, 1063706, 1519580, 2127412, 2659265, 3039160, 4254824, 5318530, 10637060, 21274120]

約数ペア:

[(1, 21274120), (2, 10637060), (4, 5318530), (5, 4254824), (7, 3039160), (8, 2659265), (10, 2127412), (14, 1519580), (20, 1063706), (28, 759790), (35, 607832), (40, 531853), (56, 379895), (70, 303916), (140, 151958), (280, 75979)]