28120796

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 27762724

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 89, 167, 172, 178, 334, 356, 473, 668, 946, 979, 1837, 1892, 1958, 3674, 3827, 3916, 7181, 7348, 7654, 14362, 14863, 15308, 28724, 29726, 42097, 59452, 78991, 84194, 157982, 163493, 168388, 315964, 326986, 639109, 653972, 1278218, 2556436, 7030199, 14060398, 28120796]

約数ペア:

[(1, 28120796), (2, 14060398), (4, 7030199), (11, 2556436), (22, 1278218), (43, 653972), (44, 639109), (86, 326986), (89, 315964), (167, 168388), (172, 163493), (178, 157982), (334, 84194), (356, 78991), (473, 59452), (668, 42097), (946, 29726), (979, 28724), (1837, 15308), (1892, 14863), (1958, 14362), (3674, 7654), (3827, 7348), (3916, 7181)]