21491456

素因数分解:

$2^8\times 7^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 50037120

約数和(自身を除く): 28545664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 67, 112, 128, 134, 179, 224, 256, 268, 358, 448, 469, 536, 716, 896, 938, 1072, 1253, 1432, 1792, 1876, 2144, 2506, 2864, 3752, 4288, 5012, 5728, 7504, 8576, 10024, 11456, 11993, 15008, 17152, 20048, 22912, 23986, 30016, 40096, 45824, 47972, 60032, 80192, 83951, 95944, 120064, 160384, 167902, 191888, 320768, 335804, 383776, 671608, 767552, 1343216, 1535104, 2686432, 3070208, 5372864, 10745728, 21491456]

約数ペア:

[(1, 21491456), (2, 10745728), (4, 5372864), (7, 3070208), (8, 2686432), (14, 1535104), (16, 1343216), (28, 767552), (32, 671608), (56, 383776), (64, 335804), (67, 320768), (112, 191888), (128, 167902), (134, 160384), (179, 120064), (224, 95944), (256, 83951), (268, 80192), (358, 60032), (448, 47972), (469, 45824), (536, 40096), (716, 30016), (896, 23986), (938, 22912), (1072, 20048), (1253, 17152), (1432, 15008), (1792, 11993), (1876, 11456), (2144, 10024), (2506, 8576), (2864, 7504), (3752, 5728), (4288, 5012)]