278291272

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1987}}^1$

素因数の和:2102

約数の個数: 64

約数和(自身を含む): 621210240

約数和(自身を除く): 342918968

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 61, 82, 122, 164, 244, 287, 328, 427, 488, 574, 854, 1148, 1708, 1987, 2296, 2501, 3416, 3974, 5002, 7948, 10004, 13909, 15896, 17507, 20008, 27818, 35014, 55636, 70028, 81467, 111272, 121207, 140056, 162934, 242414, 325868, 484828, 570269, 651736, 848449, 969656, 1140538, 1696898, 2281076, 3393796, 4562152, 4969487, 6787592, 9938974, 19877948, 34786409, 39755896, 69572818, 139145636, 278291272]

約数ペア:

[(1, 278291272), (2, 139145636), (4, 69572818), (7, 39755896), (8, 34786409), (14, 19877948), (28, 9938974), (41, 6787592), (56, 4969487), (61, 4562152), (82, 3393796), (122, 2281076), (164, 1696898), (244, 1140538), (287, 969656), (328, 848449), (427, 651736), (488, 570269), (574, 484828), (854, 325868), (1148, 242414), (1708, 162934), (1987, 140056), (2296, 121207), (2501, 111272), (3416, 81467), (3974, 70028), (5002, 55636), (7948, 35014), (10004, 27818), (13909, 20008), (15896, 17507)]