21897500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:504

約数の個数: 60

約数和(自身を含む): 50515080

約数和(自身を除く): 28617580

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 461, 475, 500, 625, 922, 950, 1250, 1844, 1900, 2305, 2375, 2500, 4610, 4750, 8759, 9220, 9500, 11525, 11875, 17518, 23050, 23750, 35036, 43795, 46100, 47500, 57625, 87590, 115250, 175180, 218975, 230500, 288125, 437950, 576250, 875900, 1094875, 1152500, 2189750, 4379500, 5474375, 10948750, 21897500]

約数ペア:

[(1, 21897500), (2, 10948750), (4, 5474375), (5, 4379500), (10, 2189750), (19, 1152500), (20, 1094875), (25, 875900), (38, 576250), (50, 437950), (76, 288125), (95, 230500), (100, 218975), (125, 175180), (190, 115250), (250, 87590), (380, 57625), (461, 47500), (475, 46100), (500, 43795), (625, 35036), (922, 23750), (950, 23050), (1250, 17518), (1844, 11875), (1900, 11525), (2305, 9500), (2375, 9220), (2500, 8759), (4610, 4750)]