81278404

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{655471}}^1$

素因数の和:655506

約数の個数: 12

約数和(自身を含む): 146825728

約数和(自身を除く): 65547324

約数列:

[1, 2, 4, 31, 62, 124, 655471, 1310942, 2621884, 20319601, 40639202, 81278404]

約数ペア:

[(1, 81278404), (2, 40639202), (4, 20319601), (31, 2621884), (62, 1310942), (124, 655471)]