19949680

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8599}}^1$

素因数の和:8641

約数の個数: 40

約数和(自身を含む): 47988000

約数和(自身を除く): 28038320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8599, 17198, 34396, 42995, 68792, 85990, 137584, 171980, 249371, 343960, 498742, 687920, 997484, 1246855, 1994968, 2493710, 3989936, 4987420, 9974840, 19949680]

約数ペア:

[(1, 19949680), (2, 9974840), (4, 4987420), (5, 3989936), (8, 2493710), (10, 1994968), (16, 1246855), (20, 997484), (29, 687920), (40, 498742), (58, 343960), (80, 249371), (116, 171980), (145, 137584), (232, 85990), (290, 68792), (464, 42995), (580, 34396), (1160, 17198), (2320, 8599)]