21295872

素因数分解:

$2^8\times 3^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:120

約数の個数: 180

約数和(自身を含む): 69250720

約数和(自身を除く): 47954848

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 79, 81, 96, 104, 108, 117, 128, 144, 156, 158, 162, 192, 208, 216, 234, 237, 256, 288, 312, 316, 324, 351, 384, 416, 432, 468, 474, 576, 624, 632, 648, 702, 711, 768, 832, 864, 936, 948, 1027, 1053, 1152, 1248, 1264, 1296, 1404, 1422, 1664, 1728, 1872, 1896, 2054, 2106, 2133, 2304, 2496, 2528, 2592, 2808, 2844, 3081, 3328, 3456, 3744, 3792, 4108, 4212, 4266, 4992, 5056, 5184, 5616, 5688, 6162, 6399, 6912, 7488, 7584, 8216, 8424, 8532, 9243, 9984, 10112, 10368, 11232, 11376, 12324, 12798, 14976, 15168, 16432, 16848, 17064, 18486, 20224, 20736, 22464, 22752, 24648, 25596, 27729, 29952, 30336, 32864, 33696, 34128, 36972, 44928, 45504, 49296, 51192, 55458, 60672, 65728, 67392, 68256, 73944, 83187, 89856, 91008, 98592, 102384, 110916, 131456, 134784, 136512, 147888, 166374, 182016, 197184, 204768, 221832, 262912, 269568, 273024, 295776, 332748, 394368, 409536, 443664, 546048, 591552, 665496, 788736, 819072, 887328, 1183104, 1330992, 1638144, 1774656, 2366208, 2661984, 3549312, 5323968, 7098624, 10647936, 21295872]

約数ペア:

[(1, 21295872), (2, 10647936), (3, 7098624), (4, 5323968), (6, 3549312), (8, 2661984), (9, 2366208), (12, 1774656), (13, 1638144), (16, 1330992), (18, 1183104), (24, 887328), (26, 819072), (27, 788736), (32, 665496), (36, 591552), (39, 546048), (48, 443664), (52, 409536), (54, 394368), (64, 332748), (72, 295776), (78, 273024), (79, 269568), (81, 262912), (96, 221832), (104, 204768), (108, 197184), (117, 182016), (128, 166374), (144, 147888), (156, 136512), (158, 134784), (162, 131456), (192, 110916), (208, 102384), (216, 98592), (234, 91008), (237, 89856), (256, 83187), (288, 73944), (312, 68256), (316, 67392), (324, 65728), (351, 60672), (384, 55458), (416, 51192), (432, 49296), (468, 45504), (474, 44928), (576, 36972), (624, 34128), (632, 33696), (648, 32864), (702, 30336), (711, 29952), (768, 27729), (832, 25596), (864, 24648), (936, 22752), (948, 22464), (1027, 20736), (1053, 20224), (1152, 18486), (1248, 17064), (1264, 16848), (1296, 16432), (1404, 15168), (1422, 14976), (1664, 12798), (1728, 12324), (1872, 11376), (1896, 11232), (2054, 10368), (2106, 10112), (2133, 9984), (2304, 9243), (2496, 8532), (2528, 8424), (2592, 8216), (2808, 7584), (2844, 7488), (3081, 6912), (3328, 6399), (3456, 6162), (3744, 5688), (3792, 5616), (4108, 5184), (4212, 5056), (4266, 4992)]