278232812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 637507584

約数和(自身を除く): 359274772

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 31, 34, 44, 52, 62, 68, 71, 124, 142, 143, 169, 187, 221, 284, 286, 338, 341, 374, 403, 442, 527, 572, 676, 682, 748, 781, 806, 884, 923, 1054, 1207, 1364, 1562, 1612, 1846, 1859, 2108, 2201, 2414, 2431, 2873, 3124, 3692, 3718, 4402, 4433, 4828, 4862, 5239, 5746, 5797, 6851, 7436, 8804, 8866, 9724, 10153, 10478, 11492, 11594, 11999, 13277, 13702, 15691, 17732, 20306, 20956, 23188, 23998, 24211, 26554, 27404, 28613, 31382, 31603, 37417, 40612, 47996, 48422, 53108, 57226, 57629, 62764, 63206, 74834, 75361, 89063, 96844, 114452, 115258, 126412, 131989, 149668, 150722, 172601, 178126, 203983, 230516, 263978, 301444, 314743, 345202, 356252, 371969, 407966, 411587, 486421, 527956, 629486, 690404, 743938, 815932, 823174, 972842, 979693, 1258972, 1487876, 1646348, 1945684, 1959386, 2243813, 3918772, 4091659, 4487626, 5350631, 6323473, 8183318, 8975252, 10701262, 12646946, 16366636, 21402524, 25293892, 69558203, 139116406, 278232812]

約数ペア:

[(1, 278232812), (2, 139116406), (4, 69558203), (11, 25293892), (13, 21402524), (17, 16366636), (22, 12646946), (26, 10701262), (31, 8975252), (34, 8183318), (44, 6323473), (52, 5350631), (62, 4487626), (68, 4091659), (71, 3918772), (124, 2243813), (142, 1959386), (143, 1945684), (169, 1646348), (187, 1487876), (221, 1258972), (284, 979693), (286, 972842), (338, 823174), (341, 815932), (374, 743938), (403, 690404), (442, 629486), (527, 527956), (572, 486421), (676, 411587), (682, 407966), (748, 371969), (781, 356252), (806, 345202), (884, 314743), (923, 301444), (1054, 263978), (1207, 230516), (1364, 203983), (1562, 178126), (1612, 172601), (1846, 150722), (1859, 149668), (2108, 131989), (2201, 126412), (2414, 115258), (2431, 114452), (2873, 96844), (3124, 89063), (3692, 75361), (3718, 74834), (4402, 63206), (4433, 62764), (4828, 57629), (4862, 57226), (5239, 53108), (5746, 48422), (5797, 47996), (6851, 40612), (7436, 37417), (8804, 31603), (8866, 31382), (9724, 28613), (10153, 27404), (10478, 26554), (11492, 24211), (11594, 23998), (11999, 23188), (13277, 20956), (13702, 20306), (15691, 17732)]