20688240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86201}}^1$

素因数の和:86217

約数の個数: 40

約数和(自身を含む): 64134288

約数和(自身を除く): 43446048

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86201, 172402, 258603, 344804, 431005, 517206, 689608, 862010, 1034412, 1293015, 1379216, 1724020, 2068824, 2586030, 3448040, 4137648, 5172060, 6896080, 10344120, 20688240]

約数ペア:

[(1, 20688240), (2, 10344120), (3, 6896080), (4, 5172060), (5, 4137648), (6, 3448040), (8, 2586030), (10, 2068824), (12, 1724020), (15, 1379216), (16, 1293015), (20, 1034412), (24, 862010), (30, 689608), (40, 517206), (48, 431005), (60, 344804), (80, 258603), (120, 172402), (240, 86201)]