320778

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:330

約数の個数: 24

約数和(自身を含む): 707616

約数和(自身を除く): 386838

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 251, 426, 502, 639, 753, 1278, 1506, 2259, 4518, 17821, 35642, 53463, 106926, 160389, 320778]

約数ペア:

[(1, 320778), (2, 160389), (3, 106926), (6, 53463), (9, 35642), (18, 17821), (71, 4518), (142, 2259), (213, 1506), (251, 1278), (426, 753), (502, 639)]