218457

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:75

約数の個数: 24

約数和(自身を含む): 349440

約数和(自身を除く): 130983

約数列:

[1, 3, 9, 27, 29, 31, 81, 87, 93, 243, 261, 279, 783, 837, 899, 2349, 2511, 2697, 7047, 7533, 8091, 24273, 72819, 218457]

約数ペア:

[(1, 218457), (3, 72819), (9, 24273), (27, 8091), (29, 7533), (31, 7047), (81, 2697), (87, 2511), (93, 2349), (243, 899), (261, 837), (279, 783)]