21804412

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2099}}^1$

素因数の和:2170

約数の個数: 36

約数和(自身を含む): 45246600

約数和(自身を除く): 23442188

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 2099, 2597, 4198, 5194, 8396, 10388, 14693, 29386, 58772, 102851, 111247, 205702, 222494, 411404, 444988, 778729, 1557458, 3114916, 5451103, 10902206, 21804412]

約数ペア:

[(1, 21804412), (2, 10902206), (4, 5451103), (7, 3114916), (14, 1557458), (28, 778729), (49, 444988), (53, 411404), (98, 222494), (106, 205702), (196, 111247), (212, 102851), (371, 58772), (742, 29386), (1484, 14693), (2099, 10388), (2597, 8396), (4198, 5194)]