21786128

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1151}}^1$

素因数の和:1192

約数の個数: 60

約数和(自身を含む): 52282368

約数和(自身を除く): 30496240

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 169, 182, 208, 338, 364, 676, 728, 1151, 1183, 1352, 1456, 2302, 2366, 2704, 4604, 4732, 8057, 9208, 9464, 14963, 16114, 18416, 18928, 29926, 32228, 59852, 64456, 104741, 119704, 128912, 194519, 209482, 239408, 389038, 418964, 778076, 837928, 1361633, 1556152, 1675856, 2723266, 3112304, 5446532, 10893064, 21786128]

約数ペア:

[(1, 21786128), (2, 10893064), (4, 5446532), (7, 3112304), (8, 2723266), (13, 1675856), (14, 1556152), (16, 1361633), (26, 837928), (28, 778076), (52, 418964), (56, 389038), (91, 239408), (104, 209482), (112, 194519), (169, 128912), (182, 119704), (208, 104741), (338, 64456), (364, 59852), (676, 32228), (728, 29926), (1151, 18928), (1183, 18416), (1352, 16114), (1456, 14963), (2302, 9464), (2366, 9208), (2704, 8057), (4604, 4732)]