18989040

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 160

約数和(自身を含む): 68567040

約数和(自身を除く): 49578000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 89, 105, 112, 120, 127, 140, 168, 178, 210, 240, 254, 267, 280, 336, 356, 381, 420, 445, 508, 534, 560, 623, 635, 712, 762, 840, 889, 890, 1016, 1068, 1246, 1270, 1335, 1424, 1524, 1680, 1778, 1780, 1869, 1905, 2032, 2136, 2492, 2540, 2667, 2670, 3048, 3115, 3556, 3560, 3738, 3810, 4272, 4445, 4984, 5080, 5334, 5340, 6096, 6230, 7112, 7120, 7476, 7620, 8890, 9345, 9968, 10160, 10668, 10680, 11303, 12460, 13335, 14224, 14952, 15240, 17780, 18690, 21336, 21360, 22606, 24920, 26670, 29904, 30480, 33909, 35560, 37380, 42672, 45212, 49840, 53340, 56515, 67818, 71120, 74760, 79121, 90424, 106680, 113030, 135636, 149520, 158242, 169545, 180848, 213360, 226060, 237363, 271272, 316484, 339090, 395605, 452120, 474726, 542544, 632968, 678180, 791210, 904240, 949452, 1186815, 1265936, 1356360, 1582420, 1898904, 2373630, 2712720, 3164840, 3797808, 4747260, 6329680, 9494520, 18989040]

約数ペア:

[(1, 18989040), (2, 9494520), (3, 6329680), (4, 4747260), (5, 3797808), (6, 3164840), (7, 2712720), (8, 2373630), (10, 1898904), (12, 1582420), (14, 1356360), (15, 1265936), (16, 1186815), (20, 949452), (21, 904240), (24, 791210), (28, 678180), (30, 632968), (35, 542544), (40, 474726), (42, 452120), (48, 395605), (56, 339090), (60, 316484), (70, 271272), (80, 237363), (84, 226060), (89, 213360), (105, 180848), (112, 169545), (120, 158242), (127, 149520), (140, 135636), (168, 113030), (178, 106680), (210, 90424), (240, 79121), (254, 74760), (267, 71120), (280, 67818), (336, 56515), (356, 53340), (381, 49840), (420, 45212), (445, 42672), (508, 37380), (534, 35560), (560, 33909), (623, 30480), (635, 29904), (712, 26670), (762, 24920), (840, 22606), (889, 21360), (890, 21336), (1016, 18690), (1068, 17780), (1246, 15240), (1270, 14952), (1335, 14224), (1424, 13335), (1524, 12460), (1680, 11303), (1778, 10680), (1780, 10668), (1869, 10160), (1905, 9968), (2032, 9345), (2136, 8890), (2492, 7620), (2540, 7476), (2667, 7120), (2670, 7112), (3048, 6230), (3115, 6096), (3556, 5340), (3560, 5334), (3738, 5080), (3810, 4984), (4272, 4445)]