28378818

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:544

約数の個数: 72

約数和(自身を含む): 70228080

約数和(自身を除く): 41849262

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 491, 494, 507, 741, 982, 1014, 1473, 1482, 1521, 2223, 2946, 3042, 3211, 4419, 4446, 6383, 6422, 8838, 9329, 9633, 12766, 18658, 19149, 19266, 27987, 28899, 38298, 55974, 57447, 57798, 82979, 83961, 114894, 121277, 165958, 167922, 242554, 248937, 363831, 497874, 727662, 746811, 1091493, 1493622, 1576601, 2182986, 3153202, 4729803, 9459606, 14189409, 28378818]

約数ペア:

[(1, 28378818), (2, 14189409), (3, 9459606), (6, 4729803), (9, 3153202), (13, 2182986), (18, 1576601), (19, 1493622), (26, 1091493), (38, 746811), (39, 727662), (57, 497874), (78, 363831), (114, 248937), (117, 242554), (169, 167922), (171, 165958), (234, 121277), (247, 114894), (338, 83961), (342, 82979), (491, 57798), (494, 57447), (507, 55974), (741, 38298), (982, 28899), (1014, 27987), (1473, 19266), (1482, 19149), (1521, 18658), (2223, 12766), (2946, 9633), (3042, 9329), (3211, 8838), (4419, 6422), (4446, 6383)]