821569329

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1381}}^1$

素因数の和:1491

約数の個数: 72

約数和(自身を含む): 1474649280

約数和(自身を除く): 653079951

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 71, 133, 147, 171, 213, 399, 441, 497, 639, 931, 1197, 1349, 1381, 1491, 2793, 3479, 4047, 4143, 4473, 8379, 9443, 9667, 10437, 12141, 12429, 26239, 28329, 29001, 31311, 66101, 67669, 78717, 84987, 87003, 98051, 183673, 198303, 203007, 236151, 294153, 551019, 594909, 609021, 686357, 882459, 1285711, 1653057, 1862969, 2059071, 3857133, 4804499, 5588907, 6177213, 11571399, 13040783, 14413497, 16766721, 39122349, 43240491, 91285481, 117367047, 273856443, 821569329]

約数ペア:

[(1, 821569329), (3, 273856443), (7, 117367047), (9, 91285481), (19, 43240491), (21, 39122349), (49, 16766721), (57, 14413497), (63, 13040783), (71, 11571399), (133, 6177213), (147, 5588907), (171, 4804499), (213, 3857133), (399, 2059071), (441, 1862969), (497, 1653057), (639, 1285711), (931, 882459), (1197, 686357), (1349, 609021), (1381, 594909), (1491, 551019), (2793, 294153), (3479, 236151), (4047, 203007), (4143, 198303), (4473, 183673), (8379, 98051), (9443, 87003), (9667, 84987), (10437, 78717), (12141, 67669), (12429, 66101), (26239, 31311), (28329, 29001)]