647639478

素因数分解:

$2^1\times 3^2\times {\mathrm{641}}^1\times {\mathrm{56131}}^1$

素因数の和:56780

約数の個数: 24

約数和(自身を含む): 1405433016

約数和(自身を除く): 757793538

約数列:

[1, 2, 3, 6, 9, 18, 641, 1282, 1923, 3846, 5769, 11538, 56131, 112262, 168393, 336786, 505179, 1010358, 35979971, 71959942, 107939913, 215879826, 323819739, 647639478]

約数ペア:

[(1, 647639478), (2, 323819739), (3, 215879826), (6, 107939913), (9, 71959942), (18, 35979971), (641, 1010358), (1282, 505179), (1923, 336786), (3846, 168393), (5769, 112262), (11538, 56131)]