19690980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1069}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 55366080

約数和(自身を除く): 35675100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 307, 614, 921, 1069, 1228, 1535, 1842, 2138, 3070, 3207, 3684, 4276, 4605, 5345, 6140, 6414, 9210, 10690, 12828, 16035, 18420, 21380, 32070, 64140, 328183, 656366, 984549, 1312732, 1640915, 1969098, 3281830, 3938196, 4922745, 6563660, 9845490, 19690980]

約数ペア:

[(1, 19690980), (2, 9845490), (3, 6563660), (4, 4922745), (5, 3938196), (6, 3281830), (10, 1969098), (12, 1640915), (15, 1312732), (20, 984549), (30, 656366), (60, 328183), (307, 64140), (614, 32070), (921, 21380), (1069, 18420), (1228, 16035), (1535, 12828), (1842, 10690), (2138, 9210), (3070, 6414), (3207, 6140), (3684, 5345), (4276, 4605)]