21305984

素因数分解:

$2^7\times 7^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 51163200

約数和(自身を除く): 29857216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 49, 56, 64, 79, 86, 98, 112, 128, 158, 172, 196, 224, 301, 316, 344, 392, 448, 553, 602, 632, 688, 784, 896, 1106, 1204, 1264, 1376, 1568, 2107, 2212, 2408, 2528, 2752, 3136, 3397, 3871, 4214, 4424, 4816, 5056, 5504, 6272, 6794, 7742, 8428, 8848, 9632, 10112, 13588, 15484, 16856, 17696, 19264, 23779, 27176, 30968, 33712, 35392, 38528, 47558, 54352, 61936, 67424, 70784, 95116, 108704, 123872, 134848, 166453, 190232, 217408, 247744, 269696, 332906, 380464, 434816, 495488, 665812, 760928, 1331624, 1521856, 2663248, 3043712, 5326496, 10652992, 21305984]

約数ペア:

[(1, 21305984), (2, 10652992), (4, 5326496), (7, 3043712), (8, 2663248), (14, 1521856), (16, 1331624), (28, 760928), (32, 665812), (43, 495488), (49, 434816), (56, 380464), (64, 332906), (79, 269696), (86, 247744), (98, 217408), (112, 190232), (128, 166453), (158, 134848), (172, 123872), (196, 108704), (224, 95116), (301, 70784), (316, 67424), (344, 61936), (392, 54352), (448, 47558), (553, 38528), (602, 35392), (632, 33712), (688, 30968), (784, 27176), (896, 23779), (1106, 19264), (1204, 17696), (1264, 16856), (1376, 15484), (1568, 13588), (2107, 10112), (2212, 9632), (2408, 8848), (2528, 8428), (2752, 7742), (3136, 6794), (3397, 6272), (3871, 5504), (4214, 5056), (4424, 4816)]