639635990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{9137657}}^1$

素因数の和:9137671

約数の個数: 16

約数和(自身を含む): 1315822752

約数和(自身を除く): 676186762

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 9137657, 18275314, 45688285, 63963599, 91376570, 127927198, 319817995, 639635990]

約数ペア:

[(1, 639635990), (2, 319817995), (5, 127927198), (7, 91376570), (10, 63963599), (14, 45688285), (35, 18275314), (70, 9137657)]