129337580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{208609}}^1$

素因数の和:208649

約数の個数: 24

約数和(自身を含む): 280371840

約数和(自身を除く): 151034260

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 208609, 417218, 834436, 1043045, 2086090, 4172180, 6466879, 12933758, 25867516, 32334395, 64668790, 129337580]

約数ペア:

[(1, 129337580), (2, 64668790), (4, 32334395), (5, 25867516), (10, 12933758), (20, 6466879), (31, 4172180), (62, 2086090), (124, 1043045), (155, 834436), (310, 417218), (620, 208609)]