1421980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1451}}^1$

素因数の和:1474

約数の個数: 36

約数和(自身を含む): 3476088

約数和(自身を除く): 2054108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1451, 2902, 5804, 7255, 10157, 14510, 20314, 29020, 40628, 50785, 71099, 101570, 142198, 203140, 284396, 355495, 710990, 1421980]

約数ペア:

[(1, 1421980), (2, 710990), (4, 355495), (5, 284396), (7, 203140), (10, 142198), (14, 101570), (20, 71099), (28, 50785), (35, 40628), (49, 29020), (70, 20314), (98, 14510), (140, 10157), (196, 7255), (245, 5804), (490, 2902), (980, 1451)]