1995149780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{223}}^1\times {\mathrm{2647}}^1$

素因数の和:2905

約数の個数: 72

約数和(自身を含む): 4558966272

約数和(自身を除く): 2563816492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 223, 260, 338, 446, 676, 845, 892, 1115, 1690, 2230, 2647, 2899, 3380, 4460, 5294, 5798, 10588, 11596, 13235, 14495, 26470, 28990, 34411, 37687, 52940, 57980, 68822, 75374, 137644, 150748, 172055, 188435, 344110, 376870, 447343, 590281, 688220, 753740, 894686, 1180562, 1789372, 2236715, 2361124, 2951405, 4473430, 5902810, 7673653, 8946860, 11805620, 15347306, 30694612, 38368265, 76736530, 99757489, 153473060, 199514978, 399029956, 498787445, 997574890, 1995149780]

約数ペア:

[(1, 1995149780), (2, 997574890), (4, 498787445), (5, 399029956), (10, 199514978), (13, 153473060), (20, 99757489), (26, 76736530), (52, 38368265), (65, 30694612), (130, 15347306), (169, 11805620), (223, 8946860), (260, 7673653), (338, 5902810), (446, 4473430), (676, 2951405), (845, 2361124), (892, 2236715), (1115, 1789372), (1690, 1180562), (2230, 894686), (2647, 753740), (2899, 688220), (3380, 590281), (4460, 447343), (5294, 376870), (5798, 344110), (10588, 188435), (11596, 172055), (13235, 150748), (14495, 137644), (26470, 75374), (28990, 68822), (34411, 57980), (37687, 52940)]