21241472

素因数分解:

$2^7\times 7^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:329

約数の個数: 64

約数和(自身を含む): 48992640

約数和(自身を除く): 27751168

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 151, 157, 224, 302, 314, 448, 604, 628, 896, 1057, 1099, 1208, 1256, 2114, 2198, 2416, 2512, 4228, 4396, 4832, 5024, 8456, 8792, 9664, 10048, 16912, 17584, 19328, 20096, 23707, 33824, 35168, 47414, 67648, 70336, 94828, 135296, 140672, 165949, 189656, 331898, 379312, 663796, 758624, 1327592, 1517248, 2655184, 3034496, 5310368, 10620736, 21241472]

約数ペア:

[(1, 21241472), (2, 10620736), (4, 5310368), (7, 3034496), (8, 2655184), (14, 1517248), (16, 1327592), (28, 758624), (32, 663796), (56, 379312), (64, 331898), (112, 189656), (128, 165949), (151, 140672), (157, 135296), (224, 94828), (302, 70336), (314, 67648), (448, 47414), (604, 35168), (628, 33824), (896, 23707), (1057, 20096), (1099, 19328), (1208, 17584), (1256, 16912), (2114, 10048), (2198, 9664), (2416, 8792), (2512, 8456), (4228, 5024), (4396, 4832)]