142747780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{145661}}^1$

素因数の和:145684

約数の個数: 36

約数和(自身を含む): 348714828

約数和(自身を除く): 205967048

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 145661, 291322, 582644, 728305, 1019627, 1456610, 2039254, 2913220, 4078508, 5098135, 7137389, 10196270, 14274778, 20392540, 28549556, 35686945, 71373890, 142747780]

約数ペア:

[(1, 142747780), (2, 71373890), (4, 35686945), (5, 28549556), (7, 20392540), (10, 14274778), (14, 10196270), (20, 7137389), (28, 5098135), (35, 4078508), (49, 2913220), (70, 2039254), (98, 1456610), (140, 1019627), (196, 728305), (245, 582644), (490, 291322), (980, 145661)]