21081466

素因数分解:

$2^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 37440000

約数和(自身を除く): 16358534

約数列:

[1, 2, 7, 14, 49, 79, 98, 158, 343, 389, 553, 686, 778, 1106, 2723, 3871, 5446, 7742, 19061, 27097, 30731, 38122, 54194, 61462, 133427, 215117, 266854, 430234, 1505819, 3011638, 10540733, 21081466]

約数ペア:

[(1, 21081466), (2, 10540733), (7, 3011638), (14, 1505819), (49, 430234), (79, 266854), (98, 215117), (158, 133427), (343, 61462), (389, 54194), (553, 38122), (686, 30731), (778, 27097), (1106, 19061), (2723, 7742), (3871, 5446)]