639732890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{718801}}^1$

素因数の和:718897

約数の個数: 16

約数和(自身を含む): 1164459240

約数和(自身を除く): 524726350

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 718801, 1437602, 3594005, 7188010, 63973289, 127946578, 319866445, 639732890]

約数ペア:

[(1, 639732890), (2, 319866445), (5, 127946578), (10, 63973289), (89, 7188010), (178, 3594005), (445, 1437602), (890, 718801)]