72451880

素因数分解:

$2^3\times 5^1\times {\mathrm{1811297}}^1$

素因数の和:1811308

約数の個数: 16

約数和(自身を含む): 163016820

約数和(自身を除く): 90564940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1811297, 3622594, 7245188, 9056485, 14490376, 18112970, 36225940, 72451880]

約数ペア:

[(1, 72451880), (2, 36225940), (4, 18112970), (5, 14490376), (8, 9056485), (10, 7245188), (20, 3622594), (40, 1811297)]