2663780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 6531840

約数和(自身を除く): 3868060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 359, 371, 530, 718, 742, 1060, 1436, 1484, 1795, 1855, 2513, 3590, 3710, 5026, 7180, 7420, 10052, 12565, 19027, 25130, 38054, 50260, 76108, 95135, 133189, 190270, 266378, 380540, 532756, 665945, 1331890, 2663780]

約数ペア:

[(1, 2663780), (2, 1331890), (4, 665945), (5, 532756), (7, 380540), (10, 266378), (14, 190270), (20, 133189), (28, 95135), (35, 76108), (53, 50260), (70, 38054), (106, 25130), (140, 19027), (212, 12565), (265, 10052), (359, 7420), (371, 7180), (530, 5026), (718, 3710), (742, 3590), (1060, 2513), (1436, 1855), (1484, 1795)]