78216440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27541}}^1$

素因数の和:27623

約数の個数: 32

約数和(自身を含む): 178472160

約数和(自身を除く): 100255720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 27541, 55082, 110164, 137705, 220328, 275410, 550820, 1101640, 1955411, 3910822, 7821644, 9777055, 15643288, 19554110, 39108220, 78216440]

約数ペア:

[(1, 78216440), (2, 39108220), (4, 19554110), (5, 15643288), (8, 9777055), (10, 7821644), (20, 3910822), (40, 1955411), (71, 1101640), (142, 550820), (284, 275410), (355, 220328), (568, 137705), (710, 110164), (1420, 55082), (2840, 27541)]