640038670

素因数分解:

$2^1\times 5^1\times {\mathrm{3643}}^1\times {\mathrm{17569}}^1$

素因数の和:21219

約数の個数: 16

約数和(自身を含む): 1152451440

約数和(自身を除く): 512412770

約数列:

[1, 2, 5, 10, 3643, 7286, 17569, 18215, 35138, 36430, 87845, 175690, 64003867, 128007734, 320019335, 640038670]

約数ペア:

[(1, 640038670), (2, 320019335), (5, 128007734), (10, 64003867), (3643, 175690), (7286, 87845), (17569, 36430), (18215, 35138)]