19912802

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 39481344

約数和(自身を除く): 19568542

約数列:

[1, 2, 7, 13, 14, 23, 26, 46, 67, 71, 91, 134, 142, 161, 182, 299, 322, 469, 497, 598, 871, 923, 938, 994, 1541, 1633, 1742, 1846, 2093, 3082, 3266, 4186, 4757, 6097, 6461, 9514, 10787, 11431, 12194, 12922, 20033, 21229, 21574, 22862, 33299, 40066, 42458, 61841, 66598, 109411, 123682, 140231, 148603, 218822, 280462, 297206, 432887, 765877, 865774, 1422343, 1531754, 2844686, 9956401, 19912802]

約数ペア:

[(1, 19912802), (2, 9956401), (7, 2844686), (13, 1531754), (14, 1422343), (23, 865774), (26, 765877), (46, 432887), (67, 297206), (71, 280462), (91, 218822), (134, 148603), (142, 140231), (161, 123682), (182, 109411), (299, 66598), (322, 61841), (469, 42458), (497, 40066), (598, 33299), (871, 22862), (923, 21574), (938, 21229), (994, 20033), (1541, 12922), (1633, 12194), (1742, 11431), (1846, 10787), (2093, 9514), (3082, 6461), (3266, 6097), (4186, 4757)]