129456820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{49411}}^1$

素因数の和:49551

約数の個数: 24

約数和(自身を含む): 273940128

約数和(自身を除く): 144483308

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 49411, 98822, 197644, 247055, 494110, 988220, 6472841, 12945682, 25891364, 32364205, 64728410, 129456820]

約数ペア:

[(1, 129456820), (2, 64728410), (4, 32364205), (5, 25891364), (10, 12945682), (20, 6472841), (131, 988220), (262, 494110), (524, 247055), (655, 197644), (1310, 98822), (2620, 49411)]