81378178

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{305933}}^1$

素因数の和:305961

約数の個数: 16

約数和(自身を含む): 146848320

約数和(自身を除く): 65470142

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 305933, 611866, 2141531, 4283062, 5812727, 11625454, 40689089, 81378178]

約数ペア:

[(1, 81378178), (2, 40689089), (7, 11625454), (14, 5812727), (19, 4283062), (38, 2141531), (133, 611866), (266, 305933)]