16920423

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 28619136

約数和(自身を除く): 11698713

約数列:

[1, 3, 9, 13, 17, 39, 47, 51, 117, 141, 153, 181, 221, 423, 543, 611, 663, 799, 1629, 1833, 1989, 2353, 2397, 3077, 5499, 7059, 7191, 8507, 9231, 10387, 21177, 25521, 27693, 31161, 40001, 76563, 93483, 110591, 120003, 144619, 331773, 360009, 433857, 995319, 1301571, 1880047, 5640141, 16920423]

約数ペア:

[(1, 16920423), (3, 5640141), (9, 1880047), (13, 1301571), (17, 995319), (39, 433857), (47, 360009), (51, 331773), (117, 144619), (141, 120003), (153, 110591), (181, 93483), (221, 76563), (423, 40001), (543, 31161), (611, 27693), (663, 25521), (799, 21177), (1629, 10387), (1833, 9231), (1989, 8507), (2353, 7191), (2397, 7059), (3077, 5499)]