27722660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2789}}^1$

素因数の和:2876

約数の個数: 48

約数和(自身を含む): 67495680

約数和(自身を除く): 39773020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 2789, 4970, 5578, 9940, 11156, 13945, 19523, 27890, 39046, 55780, 78092, 97615, 195230, 198019, 390460, 396038, 792076, 990095, 1386133, 1980190, 2772266, 3960380, 5544532, 6930665, 13861330, 27722660]

約数ペア:

[(1, 27722660), (2, 13861330), (4, 6930665), (5, 5544532), (7, 3960380), (10, 2772266), (14, 1980190), (20, 1386133), (28, 990095), (35, 792076), (70, 396038), (71, 390460), (140, 198019), (142, 195230), (284, 97615), (355, 78092), (497, 55780), (710, 39046), (994, 27890), (1420, 19523), (1988, 13945), (2485, 11156), (2789, 9940), (4970, 5578)]