21415888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5419}}^1$

素因数の和:5459

約数の個数: 40

約数和(自身を含む): 47045600

約数和(自身を除く): 25629712

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5419, 10838, 21676, 43352, 70447, 86704, 102961, 140894, 205922, 281788, 411844, 563576, 823688, 1127152, 1338493, 1647376, 2676986, 5353972, 10707944, 21415888]

約数ペア:

[(1, 21415888), (2, 10707944), (4, 5353972), (8, 2676986), (13, 1647376), (16, 1338493), (19, 1127152), (26, 823688), (38, 563576), (52, 411844), (76, 281788), (104, 205922), (152, 140894), (208, 102961), (247, 86704), (304, 70447), (494, 43352), (988, 21676), (1976, 10838), (3952, 5419)]