131489240

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{9419}}^1$

素因数の和:9779

約数の個数: 32

約数和(自身を含む): 296730000

約数和(自身を除く): 165240760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 6980, 9419, 13960, 18838, 37676, 47095, 75352, 94190, 188380, 376760, 3287231, 6574462, 13148924, 16436155, 26297848, 32872310, 65744620, 131489240]

約数ペア:

[(1, 131489240), (2, 65744620), (4, 32872310), (5, 26297848), (8, 16436155), (10, 13148924), (20, 6574462), (40, 3287231), (349, 376760), (698, 188380), (1396, 94190), (1745, 75352), (2792, 47095), (3490, 37676), (6980, 18838), (9419, 13960)]