21262976

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1249}}^1$

素因数の和:1289

約数の個数: 64

約数和(自身を含む): 51000000

約数和(自身を除く): 29737024

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 266, 304, 448, 532, 608, 896, 1064, 1216, 1249, 2128, 2432, 2498, 4256, 4996, 8512, 8743, 9992, 17024, 17486, 19984, 23731, 34972, 39968, 47462, 69944, 79936, 94924, 139888, 159872, 166117, 189848, 279776, 332234, 379696, 559552, 664468, 759392, 1119104, 1328936, 1518784, 2657872, 3037568, 5315744, 10631488, 21262976]

約数ペア:

[(1, 21262976), (2, 10631488), (4, 5315744), (7, 3037568), (8, 2657872), (14, 1518784), (16, 1328936), (19, 1119104), (28, 759392), (32, 664468), (38, 559552), (56, 379696), (64, 332234), (76, 279776), (112, 189848), (128, 166117), (133, 159872), (152, 139888), (224, 94924), (266, 79936), (304, 69944), (448, 47462), (532, 39968), (608, 34972), (896, 23731), (1064, 19984), (1216, 17486), (1249, 17024), (2128, 9992), (2432, 8743), (2498, 8512), (4256, 4996)]