77931020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{54881}}^1$

素因数の和:54961

約数の個数: 24

約数和(自身を含む): 165963168

約数和(自身を除く): 88032148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 54881, 109762, 219524, 274405, 548810, 1097620, 3896551, 7793102, 15586204, 19482755, 38965510, 77931020]

約数ペア:

[(1, 77931020), (2, 38965510), (4, 19482755), (5, 15586204), (10, 7793102), (20, 3896551), (71, 1097620), (142, 548810), (284, 274405), (355, 219524), (710, 109762), (1420, 54881)]