12990940

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{4673}}^1$

素因数の和:4821

約数の個数: 24

約数和(自身を含む): 27483120

約数和(自身を除く): 14492180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 4673, 9346, 18692, 23365, 46730, 93460, 649547, 1299094, 2598188, 3247735, 6495470, 12990940]

約数ペア:

[(1, 12990940), (2, 6495470), (4, 3247735), (5, 2598188), (10, 1299094), (20, 649547), (139, 93460), (278, 46730), (556, 23365), (695, 18692), (1390, 9346), (2780, 4673)]