21484316

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 22932196

約数列:

[1, 2, 4, 7, 14, 28, 71, 101, 107, 142, 202, 214, 284, 404, 428, 497, 707, 749, 994, 1414, 1498, 1988, 2828, 2996, 7171, 7597, 10807, 14342, 15194, 21614, 28684, 30388, 43228, 50197, 53179, 75649, 100394, 106358, 151298, 200788, 212716, 302596, 767297, 1534594, 3069188, 5371079, 10742158, 21484316]

約数ペア:

[(1, 21484316), (2, 10742158), (4, 5371079), (7, 3069188), (14, 1534594), (28, 767297), (71, 302596), (101, 212716), (107, 200788), (142, 151298), (202, 106358), (214, 100394), (284, 75649), (404, 53179), (428, 50197), (497, 43228), (707, 30388), (749, 28684), (994, 21614), (1414, 15194), (1498, 14342), (1988, 10807), (2828, 7597), (2996, 7171)]