78765980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{55469}}^1$

素因数の和:55549

約数の個数: 24

約数和(自身を含む): 167741280

約数和(自身を除く): 88975300

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 55469, 110938, 221876, 277345, 554690, 1109380, 3938299, 7876598, 15753196, 19691495, 39382990, 78765980]

約数ペア:

[(1, 78765980), (2, 39382990), (4, 19691495), (5, 15753196), (10, 7876598), (20, 3938299), (71, 1109380), (142, 554690), (284, 277345), (355, 221876), (710, 110938), (1420, 55469)]