21037961812

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{85781}}^1$

素因数の和:86272

約数の個数: 48

約数和(自身を含む): 44387038080

約数和(自身を除く): 23349076268

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 461, 532, 922, 1844, 3227, 6454, 8759, 12908, 17518, 35036, 61313, 85781, 122626, 171562, 245252, 343124, 600467, 1200934, 1629839, 2401868, 3259678, 6519356, 11408873, 22817746, 39545041, 45635492, 79090082, 158180164, 276815287, 553630574, 751355779, 1107261148, 1502711558, 3005423116, 5259490453, 10518980906, 21037961812]

約数ペア:

[(1, 21037961812), (2, 10518980906), (4, 5259490453), (7, 3005423116), (14, 1502711558), (19, 1107261148), (28, 751355779), (38, 553630574), (76, 276815287), (133, 158180164), (266, 79090082), (461, 45635492), (532, 39545041), (922, 22817746), (1844, 11408873), (3227, 6519356), (6454, 3259678), (8759, 2401868), (12908, 1629839), (17518, 1200934), (35036, 600467), (61313, 343124), (85781, 245252), (122626, 171562)]