81265970

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 148756608

約数和(自身を除く): 67490638

約数列:

[1, 2, 5, 10, 103, 206, 257, 307, 514, 515, 614, 1030, 1285, 1535, 2570, 3070, 26471, 31621, 52942, 63242, 78899, 132355, 157798, 158105, 264710, 316210, 394495, 788990, 8126597, 16253194, 40632985, 81265970]

約数ペア:

[(1, 81265970), (2, 40632985), (5, 16253194), (10, 8126597), (103, 788990), (206, 394495), (257, 316210), (307, 264710), (514, 158105), (515, 157798), (614, 132355), (1030, 78899), (1285, 63242), (1535, 52942), (2570, 31621), (3070, 26471)]