278311566

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^3\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 618266880

約数和(自身を除く): 339955314

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 169, 258, 338, 491, 507, 559, 982, 1014, 1118, 1473, 1677, 2197, 2946, 3354, 4394, 6383, 6591, 7267, 12766, 13182, 14534, 19149, 21113, 21801, 38298, 42226, 43602, 63339, 82979, 94471, 126678, 165958, 188942, 248937, 274469, 283413, 497874, 548938, 566826, 823407, 1078727, 1646814, 2157454, 3236181, 3568097, 6472362, 7136194, 10704291, 21408582, 46385261, 92770522, 139155783, 278311566]

約数ペア:

[(1, 278311566), (2, 139155783), (3, 92770522), (6, 46385261), (13, 21408582), (26, 10704291), (39, 7136194), (43, 6472362), (78, 3568097), (86, 3236181), (129, 2157454), (169, 1646814), (258, 1078727), (338, 823407), (491, 566826), (507, 548938), (559, 497874), (982, 283413), (1014, 274469), (1118, 248937), (1473, 188942), (1677, 165958), (2197, 126678), (2946, 94471), (3354, 82979), (4394, 63339), (6383, 43602), (6591, 42226), (7267, 38298), (12766, 21801), (13182, 21113), (14534, 19149)]