855338540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{31013}}^1$

素因数の和:31226

約数の個数: 48

約数和(自身を含む): 2063299392

約数和(自身を除く): 1207960852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2758, 3940, 5516, 6895, 13790, 27580, 31013, 62026, 124052, 155065, 217091, 310130, 434182, 620260, 868364, 1085455, 2170910, 4341820, 6109561, 12219122, 24438244, 30547805, 42766927, 61095610, 85533854, 122191220, 171067708, 213834635, 427669270, 855338540]

約数ペア:

[(1, 855338540), (2, 427669270), (4, 213834635), (5, 171067708), (7, 122191220), (10, 85533854), (14, 61095610), (20, 42766927), (28, 30547805), (35, 24438244), (70, 12219122), (140, 6109561), (197, 4341820), (394, 2170910), (788, 1085455), (985, 868364), (1379, 620260), (1970, 434182), (2758, 310130), (3940, 217091), (5516, 155065), (6895, 124052), (13790, 62026), (27580, 31013)]