54991180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 117976320

約数和(自身を除く): 62985140

約数列:

[1, 2, 4, 5, 10, 20, 131, 139, 151, 262, 278, 302, 524, 556, 604, 655, 695, 755, 1310, 1390, 1510, 2620, 2780, 3020, 18209, 19781, 20989, 36418, 39562, 41978, 72836, 79124, 83956, 91045, 98905, 104945, 182090, 197810, 209890, 364180, 395620, 419780, 2749559, 5499118, 10998236, 13747795, 27495590, 54991180]

約数ペア:

[(1, 54991180), (2, 27495590), (4, 13747795), (5, 10998236), (10, 5499118), (20, 2749559), (131, 419780), (139, 395620), (151, 364180), (262, 209890), (278, 197810), (302, 182090), (524, 104945), (556, 98905), (604, 91045), (655, 83956), (695, 79124), (755, 72836), (1310, 41978), (1390, 39562), (1510, 36418), (2620, 20989), (2780, 19781), (3020, 18209)]