51270520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2579}}^1$

素因数の和:2668

約数の個数: 64

約数和(自身を含む): 133747200

約数和(自身を除く): 82476680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2579, 2840, 3976, 4970, 5158, 9940, 10316, 12895, 18053, 19880, 20632, 25790, 36106, 51580, 72212, 90265, 103160, 144424, 180530, 183109, 361060, 366218, 722120, 732436, 915545, 1281763, 1464872, 1831090, 2563526, 3662180, 5127052, 6408815, 7324360, 10254104, 12817630, 25635260, 51270520]

約数ペア:

[(1, 51270520), (2, 25635260), (4, 12817630), (5, 10254104), (7, 7324360), (8, 6408815), (10, 5127052), (14, 3662180), (20, 2563526), (28, 1831090), (35, 1464872), (40, 1281763), (56, 915545), (70, 732436), (71, 722120), (140, 366218), (142, 361060), (280, 183109), (284, 180530), (355, 144424), (497, 103160), (568, 90265), (710, 72212), (994, 51580), (1420, 36106), (1988, 25790), (2485, 20632), (2579, 19880), (2840, 18053), (3976, 12895), (4970, 10316), (5158, 9940)]