640518145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1\times {\mathrm{19681}}^1$

素因数の和:19992

約数の個数: 16

約数和(自身を含む): 804915072

約数和(自身を除く): 164396927

約数列:

[1, 5, 23, 115, 283, 1415, 6509, 19681, 32545, 98405, 452663, 2263315, 5569723, 27848615, 128103629, 640518145]

約数ペア:

[(1, 640518145), (5, 128103629), (23, 27848615), (115, 5569723), (283, 2263315), (1415, 452663), (6509, 98405), (19681, 32545)]