81355761

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 132312960

約数和(自身を除く): 50957199

約数列:

[1, 3, 9, 17, 23, 51, 61, 69, 153, 183, 207, 379, 391, 549, 1037, 1137, 1173, 1403, 3111, 3411, 3519, 4209, 6443, 8717, 9333, 12627, 19329, 23119, 23851, 26151, 57987, 69357, 71553, 78453, 148189, 208071, 214659, 393023, 444567, 531737, 1179069, 1333701, 1595211, 3537207, 4785633, 9039529, 27118587, 81355761]

約数ペア:

[(1, 81355761), (3, 27118587), (9, 9039529), (17, 4785633), (23, 3537207), (51, 1595211), (61, 1333701), (69, 1179069), (153, 531737), (183, 444567), (207, 393023), (379, 214659), (391, 208071), (549, 148189), (1037, 78453), (1137, 71553), (1173, 69357), (1403, 57987), (3111, 26151), (3411, 23851), (3519, 23119), (4209, 19329), (6443, 12627), (8717, 9333)]