254767580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1\times {\mathrm{881}}^1$

素因数の和:1670

約数の個数: 48

約数和(自身を含む): 564550560

約数和(自身を除く): 309782980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 761, 881, 1522, 1762, 3044, 3524, 3805, 4405, 7610, 8810, 14459, 15220, 16739, 17620, 28918, 33478, 57836, 66956, 72295, 83695, 144590, 167390, 289180, 334780, 670441, 1340882, 2681764, 3352205, 6704410, 12738379, 13408820, 25476758, 50953516, 63691895, 127383790, 254767580]

約数ペア:

[(1, 254767580), (2, 127383790), (4, 63691895), (5, 50953516), (10, 25476758), (19, 13408820), (20, 12738379), (38, 6704410), (76, 3352205), (95, 2681764), (190, 1340882), (380, 670441), (761, 334780), (881, 289180), (1522, 167390), (1762, 144590), (3044, 83695), (3524, 72295), (3805, 66956), (4405, 57836), (7610, 33478), (8810, 28918), (14459, 17620), (15220, 16739)]