21228928

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 128

約数和(自身を含む): 53856000

約数和(自身を除く): 32627072

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 29, 32, 38, 43, 56, 58, 64, 76, 86, 112, 116, 128, 133, 152, 172, 203, 224, 232, 266, 301, 304, 344, 406, 448, 464, 532, 551, 602, 608, 688, 812, 817, 896, 928, 1064, 1102, 1204, 1216, 1247, 1376, 1624, 1634, 1856, 2128, 2204, 2408, 2432, 2494, 2752, 3248, 3268, 3712, 3857, 4256, 4408, 4816, 4988, 5504, 5719, 6496, 6536, 7714, 8512, 8729, 8816, 9632, 9976, 11438, 12992, 13072, 15428, 17024, 17458, 17632, 19264, 19952, 22876, 23693, 25984, 26144, 30856, 34916, 35264, 38528, 39904, 45752, 47386, 52288, 61712, 69832, 70528, 79808, 91504, 94772, 104576, 123424, 139664, 159616, 165851, 183008, 189544, 246848, 279328, 331702, 366016, 379088, 493696, 558656, 663404, 732032, 758176, 1117312, 1326808, 1516352, 2653616, 3032704, 5307232, 10614464, 21228928]

約数ペア:

[(1, 21228928), (2, 10614464), (4, 5307232), (7, 3032704), (8, 2653616), (14, 1516352), (16, 1326808), (19, 1117312), (28, 758176), (29, 732032), (32, 663404), (38, 558656), (43, 493696), (56, 379088), (58, 366016), (64, 331702), (76, 279328), (86, 246848), (112, 189544), (116, 183008), (128, 165851), (133, 159616), (152, 139664), (172, 123424), (203, 104576), (224, 94772), (232, 91504), (266, 79808), (301, 70528), (304, 69832), (344, 61712), (406, 52288), (448, 47386), (464, 45752), (532, 39904), (551, 38528), (602, 35264), (608, 34916), (688, 30856), (812, 26144), (817, 25984), (896, 23693), (928, 22876), (1064, 19952), (1102, 19264), (1204, 17632), (1216, 17458), (1247, 17024), (1376, 15428), (1624, 13072), (1634, 12992), (1856, 11438), (2128, 9976), (2204, 9632), (2408, 8816), (2432, 8729), (2494, 8512), (2752, 7714), (3248, 6536), (3268, 6496), (3712, 5719), (3857, 5504), (4256, 4988), (4408, 4816)]