638768170

素因数分解:

$2^1\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{50021}}^1$

素因数の和:51305

約数の個数: 16

約数和(自身を含む): 1150706088

約数和(自身を除く): 511937918

約数列:

[1, 2, 5, 10, 1277, 2554, 6385, 12770, 50021, 100042, 250105, 500210, 63876817, 127753634, 319384085, 638768170]

約数ペア:

[(1, 638768170), (2, 319384085), (5, 127753634), (10, 63876817), (1277, 500210), (2554, 250105), (6385, 100042), (12770, 50021)]