15420820

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{919}}^1$

素因数の和:1767

約数の個数: 24

約数和(自身を含む): 32457600

約数和(自身を除く): 17036780

約数列:

[1, 2, 4, 5, 10, 20, 839, 919, 1678, 1838, 3356, 3676, 4195, 4595, 8390, 9190, 16780, 18380, 771041, 1542082, 3084164, 3855205, 7710410, 15420820]

約数ペア:

[(1, 15420820), (2, 7710410), (4, 3855205), (5, 3084164), (10, 1542082), (20, 771041), (839, 18380), (919, 16780), (1678, 9190), (1838, 8390), (3356, 4595), (3676, 4195)]