20627919

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3457}}^1$

素因数の和:3496

約数の個数: 32

約数和(自身を含む): 34856640

約数和(自身を除く): 14228721

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3457, 5967, 10371, 31113, 44941, 58769, 93339, 134823, 176307, 404469, 528921, 763997, 1213407, 1586763, 2291991, 6875973, 20627919]

約数ペア:

[(1, 20627919), (3, 6875973), (9, 2291991), (13, 1586763), (17, 1213407), (27, 763997), (39, 528921), (51, 404469), (117, 176307), (153, 134823), (221, 93339), (351, 58769), (459, 44941), (663, 31113), (1989, 10371), (3457, 5967)]