80872340

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{8039}}^1$

素因数の和:8551

約数の個数: 24

約数和(自身を含む): 170190720

約数和(自身を除く): 89318380

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 2012, 2515, 5030, 8039, 10060, 16078, 32156, 40195, 80390, 160780, 4043617, 8087234, 16174468, 20218085, 40436170, 80872340]

約数ペア:

[(1, 80872340), (2, 40436170), (4, 20218085), (5, 16174468), (10, 8087234), (20, 4043617), (503, 160780), (1006, 80390), (2012, 40195), (2515, 32156), (5030, 16078), (8039, 10060)]