21745768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4051}}^1$

素因数の和:4129

約数の個数: 32

約数和(自身を含む): 45220320

約数和(自身を除く): 23474552

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 4051, 5368, 8102, 16204, 32408, 44561, 89122, 178244, 247111, 356488, 494222, 988444, 1976888, 2718221, 5436442, 10872884, 21745768]

約数ペア:

[(1, 21745768), (2, 10872884), (4, 5436442), (8, 2718221), (11, 1976888), (22, 988444), (44, 494222), (61, 356488), (88, 247111), (122, 178244), (244, 89122), (488, 44561), (671, 32408), (1342, 16204), (2684, 8102), (4051, 5368)]