280936818

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^2\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 72

約数和(自身を含む): 638995500

約数和(自身を除く): 358058682

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 109, 149, 186, 218, 279, 298, 327, 447, 558, 654, 894, 961, 981, 1341, 1922, 1962, 2682, 2883, 3379, 4619, 5766, 6758, 8649, 9238, 10137, 13857, 16241, 17298, 20274, 27714, 30411, 32482, 41571, 48723, 60822, 83142, 97446, 104749, 143189, 146169, 209498, 286378, 292338, 314247, 429567, 503471, 628494, 859134, 942741, 1006942, 1288701, 1510413, 1885482, 2577402, 3020826, 4531239, 9062478, 15607601, 31215202, 46822803, 93645606, 140468409, 280936818]

約数ペア:

[(1, 280936818), (2, 140468409), (3, 93645606), (6, 46822803), (9, 31215202), (18, 15607601), (31, 9062478), (62, 4531239), (93, 3020826), (109, 2577402), (149, 1885482), (186, 1510413), (218, 1288701), (279, 1006942), (298, 942741), (327, 859134), (447, 628494), (558, 503471), (654, 429567), (894, 314247), (961, 292338), (981, 286378), (1341, 209498), (1922, 146169), (1962, 143189), (2682, 104749), (2883, 97446), (3379, 83142), (4619, 60822), (5766, 48723), (6758, 41571), (8649, 32482), (9238, 30411), (10137, 27714), (13857, 20274), (16241, 17298)]