21278004

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{487}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 54437376

約数和(自身を除く): 33159372

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 331, 487, 662, 974, 993, 1324, 1461, 1948, 1986, 2922, 3641, 3972, 5357, 5844, 7282, 10714, 10923, 14564, 16071, 21428, 21846, 32142, 43692, 64284, 161197, 322394, 483591, 644788, 967182, 1773167, 1934364, 3546334, 5319501, 7092668, 10639002, 21278004]

約数ペア:

[(1, 21278004), (2, 10639002), (3, 7092668), (4, 5319501), (6, 3546334), (11, 1934364), (12, 1773167), (22, 967182), (33, 644788), (44, 483591), (66, 322394), (132, 161197), (331, 64284), (487, 43692), (662, 32142), (974, 21846), (993, 21428), (1324, 16071), (1461, 14564), (1948, 10923), (1986, 10714), (2922, 7282), (3641, 5844), (3972, 5357)]