19481120

素因数分解:

$2^5\times 5^1\times {\mathrm{313}}^1\times {\mathrm{389}}^1$

素因数の和:717

約数の個数: 48

約数和(自身を含む): 46289880

約数和(自身を除く): 26808760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 313, 389, 626, 778, 1252, 1556, 1565, 1945, 2504, 3112, 3130, 3890, 5008, 6224, 6260, 7780, 10016, 12448, 12520, 15560, 25040, 31120, 50080, 62240, 121757, 243514, 487028, 608785, 974056, 1217570, 1948112, 2435140, 3896224, 4870280, 9740560, 19481120]

約数ペア:

[(1, 19481120), (2, 9740560), (4, 4870280), (5, 3896224), (8, 2435140), (10, 1948112), (16, 1217570), (20, 974056), (32, 608785), (40, 487028), (80, 243514), (160, 121757), (313, 62240), (389, 50080), (626, 31120), (778, 25040), (1252, 15560), (1556, 12520), (1565, 12448), (1945, 10016), (2504, 7780), (3112, 6260), (3130, 6224), (3890, 5008)]