87212140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{61417}}^1$

素因数の和:61497

約数の個数: 24

約数和(自身を含む): 185728032

約数和(自身を除く): 98515892

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 61417, 122834, 245668, 307085, 614170, 1228340, 4360607, 8721214, 17442428, 21803035, 43606070, 87212140]

約数ペア:

[(1, 87212140), (2, 43606070), (4, 21803035), (5, 17442428), (10, 8721214), (20, 4360607), (71, 1228340), (142, 614170), (284, 307085), (355, 245668), (710, 122834), (1420, 61417)]