68918540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{84047}}^1$

素因数の和:84097

約数の個数: 24

約数和(自身を含む): 148260672

約数和(自身を除く): 79342132

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 84047, 168094, 336188, 420235, 840470, 1680940, 3445927, 6891854, 13783708, 17229635, 34459270, 68918540]

約数ペア:

[(1, 68918540), (2, 34459270), (4, 17229635), (5, 13783708), (10, 6891854), (20, 3445927), (41, 1680940), (82, 840470), (164, 420235), (205, 336188), (410, 168094), (820, 84047)]