20280500

素因数分解:

$2^2\times 5^3\times {\mathrm{47}}^1\times {\mathrm{863}}^1$

素因数の和:929

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 25006924

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 125, 188, 235, 250, 470, 500, 863, 940, 1175, 1726, 2350, 3452, 4315, 4700, 5875, 8630, 11750, 17260, 21575, 23500, 40561, 43150, 81122, 86300, 107875, 162244, 202805, 215750, 405610, 431500, 811220, 1014025, 2028050, 4056100, 5070125, 10140250, 20280500]

約数ペア:

[(1, 20280500), (2, 10140250), (4, 5070125), (5, 4056100), (10, 2028050), (20, 1014025), (25, 811220), (47, 431500), (50, 405610), (94, 215750), (100, 202805), (125, 162244), (188, 107875), (235, 86300), (250, 81122), (470, 43150), (500, 40561), (863, 23500), (940, 21575), (1175, 17260), (1726, 11750), (2350, 8630), (3452, 5875), (4315, 4700)]