21221984

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5573}}^1$

素因数の和:5607

約数の個数: 48

約数和(自身を含む): 50567328

約数和(自身を除く): 29345344

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5573, 11146, 22292, 39011, 44584, 78022, 89168, 94741, 156044, 178336, 189482, 312088, 378964, 624176, 663187, 757928, 1248352, 1326374, 1515856, 2652748, 3031712, 5305496, 10610992, 21221984]

約数ペア:

[(1, 21221984), (2, 10610992), (4, 5305496), (7, 3031712), (8, 2652748), (14, 1515856), (16, 1326374), (17, 1248352), (28, 757928), (32, 663187), (34, 624176), (56, 378964), (68, 312088), (112, 189482), (119, 178336), (136, 156044), (224, 94741), (238, 89168), (272, 78022), (476, 44584), (544, 39011), (952, 22292), (1904, 11146), (3808, 5573)]