1641902420

素因数分解:

$2^2\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{63689}}^1$

素因数の和:64987

約数の個数: 24

約数和(自身を含む): 3450724200

約数和(自身を除く): 1808821780

約数列:

[1, 2, 4, 5, 10, 20, 1289, 2578, 5156, 6445, 12890, 25780, 63689, 127378, 254756, 318445, 636890, 1273780, 82095121, 164190242, 328380484, 410475605, 820951210, 1641902420]

約数ペア:

[(1, 1641902420), (2, 820951210), (4, 410475605), (5, 328380484), (10, 164190242), (20, 82095121), (1289, 1273780), (2578, 636890), (5156, 318445), (6445, 254756), (12890, 127378), (25780, 63689)]