21641984

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{929}}^1$

素因数の和:965

約数の個数: 72

約数和(自身を含む): 53225760

約数和(自身を除く): 31583776

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 256, 364, 416, 448, 728, 832, 896, 929, 1456, 1664, 1792, 1858, 2912, 3328, 3716, 5824, 6503, 7432, 11648, 12077, 13006, 14864, 23296, 24154, 26012, 29728, 48308, 52024, 59456, 84539, 96616, 104048, 118912, 169078, 193232, 208096, 237824, 338156, 386464, 416192, 676312, 772928, 832384, 1352624, 1545856, 1664768, 2705248, 3091712, 5410496, 10820992, 21641984]

約数ペア:

[(1, 21641984), (2, 10820992), (4, 5410496), (7, 3091712), (8, 2705248), (13, 1664768), (14, 1545856), (16, 1352624), (26, 832384), (28, 772928), (32, 676312), (52, 416192), (56, 386464), (64, 338156), (91, 237824), (104, 208096), (112, 193232), (128, 169078), (182, 118912), (208, 104048), (224, 96616), (256, 84539), (364, 59456), (416, 52024), (448, 48308), (728, 29728), (832, 26012), (896, 24154), (929, 23296), (1456, 14864), (1664, 13006), (1792, 12077), (1858, 11648), (2912, 7432), (3328, 6503), (3716, 5824)]