21245808

素因数分解:

$2^4\times 3^1\times {\mathrm{113}}^1\times {\mathrm{3917}}^1$

素因数の和:4041

約数の個数: 40

約数和(自身を含む): 55384848

約数和(自身を除く): 34139040

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 113, 226, 339, 452, 678, 904, 1356, 1808, 2712, 3917, 5424, 7834, 11751, 15668, 23502, 31336, 47004, 62672, 94008, 188016, 442621, 885242, 1327863, 1770484, 2655726, 3540968, 5311452, 7081936, 10622904, 21245808]

約数ペア:

[(1, 21245808), (2, 10622904), (3, 7081936), (4, 5311452), (6, 3540968), (8, 2655726), (12, 1770484), (16, 1327863), (24, 885242), (48, 442621), (113, 188016), (226, 94008), (339, 62672), (452, 47004), (678, 31336), (904, 23502), (1356, 15668), (1808, 11751), (2712, 7834), (3917, 5424)]