84877660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8539}}^1$

素因数の和:8626

約数の個数: 48

約数和(自身を含む): 206599680

約数和(自身を除く): 121722020

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, 4970, 8539, 9940, 17078, 34156, 42695, 59773, 85390, 119546, 170780, 239092, 298865, 597730, 606269, 1195460, 1212538, 2425076, 3031345, 4243883, 6062690, 8487766, 12125380, 16975532, 21219415, 42438830, 84877660]

約数ペア:

[(1, 84877660), (2, 42438830), (4, 21219415), (5, 16975532), (7, 12125380), (10, 8487766), (14, 6062690), (20, 4243883), (28, 3031345), (35, 2425076), (70, 1212538), (71, 1195460), (140, 606269), (142, 597730), (284, 298865), (355, 239092), (497, 170780), (710, 119546), (994, 85390), (1420, 59773), (1988, 42695), (2485, 34156), (4970, 17078), (8539, 9940)]