18155907

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 80

約数和(自身を含む): 35126784

約数和(自身を除く): 16970877

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 41, 63, 71, 77, 81, 99, 123, 189, 213, 231, 287, 297, 369, 451, 497, 567, 639, 693, 781, 861, 891, 1107, 1353, 1491, 1917, 2079, 2343, 2583, 2911, 3157, 3321, 4059, 4473, 5467, 5751, 6237, 7029, 7749, 8733, 9471, 12177, 13419, 16401, 20377, 21087, 23247, 26199, 28413, 32021, 36531, 40257, 49203, 61131, 63261, 78597, 85239, 96063, 147609, 183393, 224147, 235791, 255717, 288189, 442827, 550179, 672441, 864567, 1650537, 2017323, 2593701, 6051969, 18155907]

約数ペア:

[(1, 18155907), (3, 6051969), (7, 2593701), (9, 2017323), (11, 1650537), (21, 864567), (27, 672441), (33, 550179), (41, 442827), (63, 288189), (71, 255717), (77, 235791), (81, 224147), (99, 183393), (123, 147609), (189, 96063), (213, 85239), (231, 78597), (287, 63261), (297, 61131), (369, 49203), (451, 40257), (497, 36531), (567, 32021), (639, 28413), (693, 26199), (781, 23247), (861, 21087), (891, 20377), (1107, 16401), (1353, 13419), (1491, 12177), (1917, 9471), (2079, 8733), (2343, 7749), (2583, 7029), (2911, 6237), (3157, 5751), (3321, 5467), (4059, 4473)]