260514640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{75731}}^1$

素因数の和:75787

約数の個数: 40

約数和(自身を含む): 619790688

約数和(自身を除く): 359276048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 75731, 151462, 302924, 378655, 605848, 757310, 1211696, 1514620, 3029240, 3256433, 6058480, 6512866, 13025732, 16282165, 26051464, 32564330, 52102928, 65128660, 130257320, 260514640]

約数ペア:

[(1, 260514640), (2, 130257320), (4, 65128660), (5, 52102928), (8, 32564330), (10, 26051464), (16, 16282165), (20, 13025732), (40, 6512866), (43, 6058480), (80, 3256433), (86, 3029240), (172, 1514620), (215, 1211696), (344, 757310), (430, 605848), (688, 378655), (860, 302924), (1720, 151462), (3440, 75731)]