21739648

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1277}}^1$

素因数の和:1317

約数の個数: 64

約数和(自身を含む): 52142400

約数和(自身を除く): 30402752

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, 1277, 2128, 2432, 2554, 4256, 5108, 8512, 8939, 10216, 17024, 17878, 20432, 24263, 35756, 40864, 48526, 71512, 81728, 97052, 143024, 163456, 169841, 194104, 286048, 339682, 388208, 572096, 679364, 776416, 1144192, 1358728, 1552832, 2717456, 3105664, 5434912, 10869824, 21739648]

約数ペア:

[(1, 21739648), (2, 10869824), (4, 5434912), (7, 3105664), (8, 2717456), (14, 1552832), (16, 1358728), (19, 1144192), (28, 776416), (32, 679364), (38, 572096), (56, 388208), (64, 339682), (76, 286048), (112, 194104), (128, 169841), (133, 163456), (152, 143024), (224, 97052), (266, 81728), (304, 71512), (448, 48526), (532, 40864), (608, 35756), (896, 24263), (1064, 20432), (1216, 17878), (1277, 17024), (2128, 10216), (2432, 8939), (2554, 8512), (4256, 5108)]