12988780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{257}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 33028128

約数和(自身を除く): 20039348

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 257, 266, 361, 380, 514, 532, 665, 722, 1028, 1285, 1330, 1444, 1799, 1805, 2527, 2570, 2660, 3598, 3610, 4883, 5054, 5140, 7196, 7220, 8995, 9766, 10108, 12635, 17990, 19532, 24415, 25270, 34181, 35980, 48830, 50540, 68362, 92777, 97660, 136724, 170905, 185554, 341810, 371108, 463885, 649439, 683620, 927770, 1298878, 1855540, 2597756, 3247195, 6494390, 12988780]

約数ペア:

[(1, 12988780), (2, 6494390), (4, 3247195), (5, 2597756), (7, 1855540), (10, 1298878), (14, 927770), (19, 683620), (20, 649439), (28, 463885), (35, 371108), (38, 341810), (70, 185554), (76, 170905), (95, 136724), (133, 97660), (140, 92777), (190, 68362), (257, 50540), (266, 48830), (361, 35980), (380, 34181), (514, 25270), (532, 24415), (665, 19532), (722, 17990), (1028, 12635), (1285, 10108), (1330, 9766), (1444, 8995), (1799, 7220), (1805, 7196), (2527, 5140), (2570, 5054), (2660, 4883), (3598, 3610)]