84147020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{135721}}^1$

素因数の和:135761

約数の個数: 24

約数和(自身を含む): 182410368

約数和(自身を除く): 98263348

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 135721, 271442, 542884, 678605, 1357210, 2714420, 4207351, 8414702, 16829404, 21036755, 42073510, 84147020]

約数ペア:

[(1, 84147020), (2, 42073510), (4, 21036755), (5, 16829404), (10, 8414702), (20, 4207351), (31, 2714420), (62, 1357210), (124, 678605), (155, 542884), (310, 271442), (620, 135721)]