20098450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 19274030

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 83, 145, 166, 167, 290, 334, 415, 725, 830, 835, 1450, 1670, 2075, 2407, 4150, 4175, 4814, 4843, 8350, 9686, 12035, 13861, 24070, 24215, 27722, 48430, 60175, 69305, 120350, 121075, 138610, 242150, 346525, 401969, 693050, 803938, 2009845, 4019690, 10049225, 20098450]

約数ペア:

[(1, 20098450), (2, 10049225), (5, 4019690), (10, 2009845), (25, 803938), (29, 693050), (50, 401969), (58, 346525), (83, 242150), (145, 138610), (166, 121075), (167, 120350), (290, 69305), (334, 60175), (415, 48430), (725, 27722), (830, 24215), (835, 24070), (1450, 13861), (1670, 12035), (2075, 9686), (2407, 8350), (4150, 4843), (4175, 4814)]