20878533

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3499}}^1$

素因数の和:3538

約数の個数: 32

約数和(自身を含む): 35280000

約数和(自身を除く): 14401467

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3499, 5967, 10497, 31491, 45487, 59483, 94473, 136461, 178449, 409383, 535347, 773279, 1228149, 1606041, 2319837, 6959511, 20878533]

約数ペア:

[(1, 20878533), (3, 6959511), (9, 2319837), (13, 1606041), (17, 1228149), (27, 773279), (39, 535347), (51, 409383), (117, 178449), (153, 136461), (221, 94473), (351, 59483), (459, 45487), (663, 31491), (1989, 10497), (3499, 5967)]