20215552

素因数分解:

$2^8\times 7^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 47829600

約数和(自身を除く): 27614048

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 256, 389, 406, 448, 464, 778, 812, 896, 928, 1556, 1624, 1792, 1856, 2723, 3112, 3248, 3712, 5446, 6224, 6496, 7424, 10892, 11281, 12448, 12992, 21784, 22562, 24896, 25984, 43568, 45124, 49792, 51968, 78967, 87136, 90248, 99584, 157934, 174272, 180496, 315868, 348544, 360992, 631736, 697088, 721984, 1263472, 1443968, 2526944, 2887936, 5053888, 10107776, 20215552]

約数ペア:

[(1, 20215552), (2, 10107776), (4, 5053888), (7, 2887936), (8, 2526944), (14, 1443968), (16, 1263472), (28, 721984), (29, 697088), (32, 631736), (56, 360992), (58, 348544), (64, 315868), (112, 180496), (116, 174272), (128, 157934), (203, 99584), (224, 90248), (232, 87136), (256, 78967), (389, 51968), (406, 49792), (448, 45124), (464, 43568), (778, 25984), (812, 24896), (896, 22562), (928, 21784), (1556, 12992), (1624, 12448), (1792, 11281), (1856, 10892), (2723, 7424), (3112, 6496), (3248, 6224), (3712, 5446)]