638828918

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:541

約数の個数: 64

約数和(自身を含む): 1206159360

約数和(自身を除く): 567330442

約数列:

[1, 2, 7, 13, 14, 26, 79, 91, 157, 158, 182, 283, 314, 553, 566, 1027, 1099, 1106, 1981, 2041, 2054, 2198, 3679, 3962, 4082, 7189, 7358, 12403, 14287, 14378, 22357, 24806, 25753, 28574, 44431, 44714, 51506, 86821, 88862, 156499, 161239, 173642, 290641, 311017, 312998, 322478, 577603, 581282, 622034, 1128673, 1155206, 2034487, 2257346, 3510049, 4043221, 4068974, 7020098, 8086442, 24570343, 45630637, 49140686, 91261274, 319414459, 638828918]

約数ペア:

[(1, 638828918), (2, 319414459), (7, 91261274), (13, 49140686), (14, 45630637), (26, 24570343), (79, 8086442), (91, 7020098), (157, 4068974), (158, 4043221), (182, 3510049), (283, 2257346), (314, 2034487), (553, 1155206), (566, 1128673), (1027, 622034), (1099, 581282), (1106, 577603), (1981, 322478), (2041, 312998), (2054, 311017), (2198, 290641), (3679, 173642), (3962, 161239), (4082, 156499), (7189, 88862), (7358, 86821), (12403, 51506), (14287, 44714), (14378, 44431), (22357, 28574), (24806, 25753)]