19875882

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 45045504

約数和(自身を除く): 25169622

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 71, 74, 78, 97, 111, 142, 194, 213, 222, 291, 426, 481, 582, 923, 962, 1261, 1443, 1846, 2522, 2627, 2769, 2886, 3589, 3783, 5254, 5538, 6887, 7178, 7566, 7881, 10767, 13774, 15762, 20661, 21534, 34151, 41322, 46657, 68302, 89531, 93314, 102453, 139971, 179062, 204906, 254819, 268593, 279942, 509638, 537186, 764457, 1528914, 3312647, 6625294, 9937941, 19875882]

約数ペア:

[(1, 19875882), (2, 9937941), (3, 6625294), (6, 3312647), (13, 1528914), (26, 764457), (37, 537186), (39, 509638), (71, 279942), (74, 268593), (78, 254819), (97, 204906), (111, 179062), (142, 139971), (194, 102453), (213, 93314), (222, 89531), (291, 68302), (426, 46657), (481, 41322), (582, 34151), (923, 21534), (962, 20661), (1261, 15762), (1443, 13774), (1846, 10767), (2522, 7881), (2627, 7566), (2769, 7178), (2886, 6887), (3589, 5538), (3783, 5254)]