90243580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{644597}}^1$

素因数の和:644613

約数の個数: 24

約数和(自身を含む): 216584928

約数和(自身を除く): 126341348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 644597, 1289194, 2578388, 3222985, 4512179, 6445970, 9024358, 12891940, 18048716, 22560895, 45121790, 90243580]

約数ペア:

[(1, 90243580), (2, 45121790), (4, 22560895), (5, 18048716), (7, 12891940), (10, 9024358), (14, 6445970), (20, 4512179), (28, 3222985), (35, 2578388), (70, 1289194), (140, 644597)]