21139400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5563}}^1$

素因数の和:5598

約数の個数: 48

約数和(自身を含む): 51745200

約数和(自身を除く): 30605800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5563, 11126, 22252, 27815, 44504, 55630, 105697, 111260, 139075, 211394, 222520, 278150, 422788, 528485, 556300, 845576, 1056970, 1112600, 2113940, 2642425, 4227880, 5284850, 10569700, 21139400]

約数ペア:

[(1, 21139400), (2, 10569700), (4, 5284850), (5, 4227880), (8, 2642425), (10, 2113940), (19, 1112600), (20, 1056970), (25, 845576), (38, 556300), (40, 528485), (50, 422788), (76, 278150), (95, 222520), (100, 211394), (152, 139075), (190, 111260), (200, 105697), (380, 55630), (475, 44504), (760, 27815), (950, 22252), (1900, 11126), (3800, 5563)]