18516519

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^2\times {\mathrm{113}}^1$

素因数の和:166

約数の個数: 60

約数和(自身を含む): 33878064

約数和(自身を除く): 15361545

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 113, 119, 153, 189, 289, 339, 357, 459, 567, 791, 867, 1017, 1071, 1377, 1921, 2023, 2373, 2601, 3051, 3213, 5763, 6069, 7119, 7803, 9153, 9639, 13447, 17289, 18207, 21357, 23409, 32657, 40341, 51867, 54621, 64071, 97971, 121023, 155601, 163863, 228599, 293913, 363069, 685797, 881739, 1089207, 2057391, 2645217, 6172173, 18516519]

約数ペア:

[(1, 18516519), (3, 6172173), (7, 2645217), (9, 2057391), (17, 1089207), (21, 881739), (27, 685797), (51, 363069), (63, 293913), (81, 228599), (113, 163863), (119, 155601), (153, 121023), (189, 97971), (289, 64071), (339, 54621), (357, 51867), (459, 40341), (567, 32657), (791, 23409), (867, 21357), (1017, 18207), (1071, 17289), (1377, 13447), (1921, 9639), (2023, 9153), (2373, 7803), (2601, 7119), (3051, 6069), (3213, 5763)]