18839320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15193}}^1$

素因数の和:15235

約数の個数: 32

約数和(自身を含む): 43758720

約数和(自身を除く): 24919400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15193, 30386, 60772, 75965, 121544, 151930, 303860, 470983, 607720, 941966, 1883932, 2354915, 3767864, 4709830, 9419660, 18839320]

約数ペア:

[(1, 18839320), (2, 9419660), (4, 4709830), (5, 3767864), (8, 2354915), (10, 1883932), (20, 941966), (31, 607720), (40, 470983), (62, 303860), (124, 151930), (155, 121544), (248, 75965), (310, 60772), (620, 30386), (1240, 15193)]