6821780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{6961}}^1$

素因数の和:6984

約数の個数: 36

約数和(自身を含む): 16667028

約数和(自身を除く): 9845248

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 6961, 13922, 27844, 34805, 48727, 69610, 97454, 139220, 194908, 243635, 341089, 487270, 682178, 974540, 1364356, 1705445, 3410890, 6821780]

約数ペア:

[(1, 6821780), (2, 3410890), (4, 1705445), (5, 1364356), (7, 974540), (10, 682178), (14, 487270), (20, 341089), (28, 243635), (35, 194908), (49, 139220), (70, 97454), (98, 69610), (140, 48727), (196, 34805), (245, 27844), (490, 13922), (980, 6961)]