21436864

素因数分解:

$2^6\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:126

約数の個数: 84

約数和(自身を含む): 48346360

約数和(自身を除く): 26909496

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 61, 64, 68, 76, 122, 136, 152, 244, 272, 289, 304, 323, 488, 544, 578, 608, 646, 976, 1037, 1088, 1156, 1159, 1216, 1292, 1952, 2074, 2312, 2318, 2584, 3904, 4148, 4624, 4636, 5168, 5491, 8296, 9248, 9272, 10336, 10982, 16592, 17629, 18496, 18544, 19703, 20672, 21964, 33184, 35258, 37088, 39406, 43928, 66368, 70516, 74176, 78812, 87856, 141032, 157624, 175712, 282064, 315248, 334951, 351424, 564128, 630496, 669902, 1128256, 1260992, 1339804, 2679608, 5359216, 10718432, 21436864]

約数ペア:

[(1, 21436864), (2, 10718432), (4, 5359216), (8, 2679608), (16, 1339804), (17, 1260992), (19, 1128256), (32, 669902), (34, 630496), (38, 564128), (61, 351424), (64, 334951), (68, 315248), (76, 282064), (122, 175712), (136, 157624), (152, 141032), (244, 87856), (272, 78812), (289, 74176), (304, 70516), (323, 66368), (488, 43928), (544, 39406), (578, 37088), (608, 35258), (646, 33184), (976, 21964), (1037, 20672), (1088, 19703), (1156, 18544), (1159, 18496), (1216, 17629), (1292, 16592), (1952, 10982), (2074, 10336), (2312, 9272), (2318, 9248), (2584, 8296), (3904, 5491), (4148, 5168), (4624, 4636)]