159796820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{130981}}^1$

素因数の和:131051

約数の個数: 24

約数和(自身を含む): 341077128

約数和(自身を除く): 181280308

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 130981, 261962, 523924, 654905, 1309810, 2619620, 7989841, 15979682, 31959364, 39949205, 79898410, 159796820]

約数ペア:

[(1, 159796820), (2, 79898410), (4, 39949205), (5, 31959364), (10, 15979682), (20, 7989841), (61, 2619620), (122, 1309810), (244, 654905), (305, 523924), (610, 261962), (1220, 130981)]