161825440

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{20641}}^1$

素因数の和:20670

約数の個数: 72

約数和(自身を含む): 444752532

約数和(自身を除く): 282927092

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 20641, 41282, 82564, 103205, 144487, 165128, 206410, 288974, 330256, 412820, 577948, 660512, 722435, 825640, 1011409, 1155896, 1444870, 1651280, 2022818, 2311792, 2889740, 3302560, 4045636, 4623584, 5057045, 5779480, 8091272, 10114090, 11558960, 16182544, 20228180, 23117920, 32365088, 40456360, 80912720, 161825440]

約数ペア:

[(1, 161825440), (2, 80912720), (4, 40456360), (5, 32365088), (7, 23117920), (8, 20228180), (10, 16182544), (14, 11558960), (16, 10114090), (20, 8091272), (28, 5779480), (32, 5057045), (35, 4623584), (40, 4045636), (49, 3302560), (56, 2889740), (70, 2311792), (80, 2022818), (98, 1651280), (112, 1444870), (140, 1155896), (160, 1011409), (196, 825640), (224, 722435), (245, 660512), (280, 577948), (392, 412820), (490, 330256), (560, 288974), (784, 206410), (980, 165128), (1120, 144487), (1568, 103205), (1960, 82564), (3920, 41282), (7840, 20641)]