21355264

素因数分解:

$2^8\times 7^1\times {\mathrm{17}}^1\times {\mathrm{701}}^1$

素因数の和:741

約数の個数: 72

約数和(自身を含む): 51655968

約数和(自身を除く): 30300704

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 256, 272, 448, 476, 544, 701, 896, 952, 1088, 1402, 1792, 1904, 2176, 2804, 3808, 4352, 4907, 5608, 7616, 9814, 11216, 11917, 15232, 19628, 22432, 23834, 30464, 39256, 44864, 47668, 78512, 83419, 89728, 95336, 157024, 166838, 179456, 190672, 314048, 333676, 381344, 628096, 667352, 762688, 1256192, 1334704, 1525376, 2669408, 3050752, 5338816, 10677632, 21355264]

約数ペア:

[(1, 21355264), (2, 10677632), (4, 5338816), (7, 3050752), (8, 2669408), (14, 1525376), (16, 1334704), (17, 1256192), (28, 762688), (32, 667352), (34, 628096), (56, 381344), (64, 333676), (68, 314048), (112, 190672), (119, 179456), (128, 166838), (136, 157024), (224, 95336), (238, 89728), (256, 83419), (272, 78512), (448, 47668), (476, 44864), (544, 39256), (701, 30464), (896, 23834), (952, 22432), (1088, 19628), (1402, 15232), (1792, 11917), (1904, 11216), (2176, 9814), (2804, 7616), (3808, 5608), (4352, 4907)]