21391488

素因数分解:

$2^7\times 3^2\times {\mathrm{31}}^1\times {\mathrm{599}}^1$

素因数の和:650

約数の個数: 96

約数和(自身を含む): 63648000

約数和(自身を除く): 42256512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 128, 144, 186, 192, 248, 279, 288, 372, 384, 496, 558, 576, 599, 744, 992, 1116, 1152, 1198, 1488, 1797, 1984, 2232, 2396, 2976, 3594, 3968, 4464, 4792, 5391, 5952, 7188, 8928, 9584, 10782, 11904, 14376, 17856, 18569, 19168, 21564, 28752, 35712, 37138, 38336, 43128, 55707, 57504, 74276, 76672, 86256, 111414, 115008, 148552, 167121, 172512, 222828, 230016, 297104, 334242, 345024, 445656, 594208, 668484, 690048, 891312, 1188416, 1336968, 1782624, 2376832, 2673936, 3565248, 5347872, 7130496, 10695744, 21391488]

約数ペア:

[(1, 21391488), (2, 10695744), (3, 7130496), (4, 5347872), (6, 3565248), (8, 2673936), (9, 2376832), (12, 1782624), (16, 1336968), (18, 1188416), (24, 891312), (31, 690048), (32, 668484), (36, 594208), (48, 445656), (62, 345024), (64, 334242), (72, 297104), (93, 230016), (96, 222828), (124, 172512), (128, 167121), (144, 148552), (186, 115008), (192, 111414), (248, 86256), (279, 76672), (288, 74276), (372, 57504), (384, 55707), (496, 43128), (558, 38336), (576, 37138), (599, 35712), (744, 28752), (992, 21564), (1116, 19168), (1152, 18569), (1198, 17856), (1488, 14376), (1797, 11904), (1984, 10782), (2232, 9584), (2396, 8928), (2976, 7188), (3594, 5952), (3968, 5391), (4464, 4792)]