79918640

素因数分解:

$2^4\times 5^1\times {\mathrm{998983}}^1$

素因数の和:998996

約数の個数: 20

約数和(自身を含む): 185811024

約数和(自身を除く): 105892384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 998983, 1997966, 3995932, 4994915, 7991864, 9989830, 15983728, 19979660, 39959320, 79918640]

約数ペア:

[(1, 79918640), (2, 39959320), (4, 19979660), (5, 15983728), (8, 9989830), (10, 7991864), (16, 4994915), (20, 3995932), (40, 1997966), (80, 998983)]