128390860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{493811}}^1$

素因数の和:493833

約数の個数: 24

約数和(自身を含む): 290361456

約数和(自身を除く): 161970596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 493811, 987622, 1975244, 2469055, 4938110, 6419543, 9876220, 12839086, 25678172, 32097715, 64195430, 128390860]

約数ペア:

[(1, 128390860), (2, 64195430), (4, 32097715), (5, 25678172), (10, 12839086), (13, 9876220), (20, 6419543), (26, 4938110), (52, 2469055), (65, 1975244), (130, 987622), (260, 493811)]