19761200

素因数分解:

$2^4\times 5^2\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:534

約数の個数: 60

約数和(自身を含む): 47973120

約数和(自身を除く): 28211920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 127, 200, 254, 389, 400, 508, 635, 778, 1016, 1270, 1556, 1945, 2032, 2540, 3112, 3175, 3890, 5080, 6224, 6350, 7780, 9725, 10160, 12700, 15560, 19450, 25400, 31120, 38900, 49403, 50800, 77800, 98806, 155600, 197612, 247015, 395224, 494030, 790448, 988060, 1235075, 1976120, 2470150, 3952240, 4940300, 9880600, 19761200]

約数ペア:

[(1, 19761200), (2, 9880600), (4, 4940300), (5, 3952240), (8, 2470150), (10, 1976120), (16, 1235075), (20, 988060), (25, 790448), (40, 494030), (50, 395224), (80, 247015), (100, 197612), (127, 155600), (200, 98806), (254, 77800), (389, 50800), (400, 49403), (508, 38900), (635, 31120), (778, 25400), (1016, 19450), (1270, 15560), (1556, 12700), (1945, 10160), (2032, 9725), (2540, 7780), (3112, 6350), (3175, 6224), (3890, 5080)]