80367620

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^2\times {\mathrm{181}}^1$

素因数の和:488

約数の個数: 36

約数和(自身を含む): 170851044

約数和(自身を除く): 90483424

約数列:

[1, 2, 4, 5, 10, 20, 149, 181, 298, 362, 596, 724, 745, 905, 1490, 1810, 2980, 3620, 22201, 26969, 44402, 53938, 88804, 107876, 111005, 134845, 222010, 269690, 444020, 539380, 4018381, 8036762, 16073524, 20091905, 40183810, 80367620]

約数ペア:

[(1, 80367620), (2, 40183810), (4, 20091905), (5, 16073524), (10, 8036762), (20, 4018381), (149, 539380), (181, 444020), (298, 269690), (362, 222010), (596, 134845), (724, 111005), (745, 107876), (905, 88804), (1490, 53938), (1810, 44402), (2980, 26969), (3620, 22201)]