18876234

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 43868160

約数和(自身を除く): 24991926

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 47, 57, 78, 94, 114, 141, 247, 271, 282, 494, 542, 611, 741, 813, 893, 1222, 1482, 1626, 1786, 1833, 2679, 3523, 3666, 5149, 5358, 7046, 10298, 10569, 11609, 12737, 15447, 21138, 23218, 25474, 30894, 34827, 38211, 66937, 69654, 76422, 133874, 165581, 200811, 242003, 331162, 401622, 484006, 496743, 726009, 993486, 1452018, 3146039, 6292078, 9438117, 18876234]

約数ペア:

[(1, 18876234), (2, 9438117), (3, 6292078), (6, 3146039), (13, 1452018), (19, 993486), (26, 726009), (38, 496743), (39, 484006), (47, 401622), (57, 331162), (78, 242003), (94, 200811), (114, 165581), (141, 133874), (247, 76422), (271, 69654), (282, 66937), (494, 38211), (542, 34827), (611, 30894), (741, 25474), (813, 23218), (893, 21138), (1222, 15447), (1482, 12737), (1626, 11609), (1786, 10569), (1833, 10298), (2679, 7046), (3523, 5358), (3666, 5149)]