28657908

素因数分解:

$2^2\times 3^3\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:258

約数の個数: 96

約数和(自身を含む): 79027200

約数和(自身を除く): 50369292

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 27, 36, 46, 54, 69, 83, 92, 108, 138, 139, 166, 207, 249, 276, 278, 332, 414, 417, 498, 556, 621, 747, 828, 834, 996, 1242, 1251, 1494, 1668, 1909, 2241, 2484, 2502, 2988, 3197, 3753, 3818, 4482, 5004, 5727, 6394, 7506, 7636, 8964, 9591, 11454, 11537, 12788, 15012, 17181, 19182, 22908, 23074, 28773, 34362, 34611, 38364, 46148, 51543, 57546, 68724, 69222, 86319, 103086, 103833, 115092, 138444, 172638, 206172, 207666, 265351, 311499, 345276, 415332, 530702, 622998, 796053, 1061404, 1245996, 1592106, 2388159, 3184212, 4776318, 7164477, 9552636, 14328954, 28657908]

約数ペア:

[(1, 28657908), (2, 14328954), (3, 9552636), (4, 7164477), (6, 4776318), (9, 3184212), (12, 2388159), (18, 1592106), (23, 1245996), (27, 1061404), (36, 796053), (46, 622998), (54, 530702), (69, 415332), (83, 345276), (92, 311499), (108, 265351), (138, 207666), (139, 206172), (166, 172638), (207, 138444), (249, 115092), (276, 103833), (278, 103086), (332, 86319), (414, 69222), (417, 68724), (498, 57546), (556, 51543), (621, 46148), (747, 38364), (828, 34611), (834, 34362), (996, 28773), (1242, 23074), (1251, 22908), (1494, 19182), (1668, 17181), (1909, 15012), (2241, 12788), (2484, 11537), (2502, 11454), (2988, 9591), (3197, 8964), (3753, 7636), (3818, 7506), (4482, 6394), (5004, 5727)]