128971980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{238837}}^1$

素因数の和:238855

約数の個数: 48

約数和(自身を含む): 401247840

約数和(自身を除く): 272275860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 238837, 477674, 716511, 955348, 1194185, 1433022, 2149533, 2388370, 2866044, 3582555, 4299066, 4776740, 6448599, 7165110, 8598132, 10747665, 12897198, 14330220, 21495330, 25794396, 32242995, 42990660, 64485990, 128971980]

約数ペア:

[(1, 128971980), (2, 64485990), (3, 42990660), (4, 32242995), (5, 25794396), (6, 21495330), (9, 14330220), (10, 12897198), (12, 10747665), (15, 8598132), (18, 7165110), (20, 6448599), (27, 4776740), (30, 4299066), (36, 3582555), (45, 2866044), (54, 2388370), (60, 2149533), (90, 1433022), (108, 1194185), (135, 955348), (180, 716511), (270, 477674), (540, 238837)]