20512946500

素因数分解:

$2^2\times 5^3\times {\mathrm{113}}^1\times {\mathrm{363061}}^1$

素因数の和:363193

約数の個数: 48

約数和(自身を含む): 45196862256

約数和(自身を除く): 24683915756

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 113, 125, 226, 250, 452, 500, 565, 1130, 2260, 2825, 5650, 11300, 14125, 28250, 56500, 363061, 726122, 1452244, 1815305, 3630610, 7261220, 9076525, 18153050, 36306100, 41025893, 45382625, 82051786, 90765250, 164103572, 181530500, 205129465, 410258930, 820517860, 1025647325, 2051294650, 4102589300, 5128236625, 10256473250, 20512946500]

約数ペア:

[(1, 20512946500), (2, 10256473250), (4, 5128236625), (5, 4102589300), (10, 2051294650), (20, 1025647325), (25, 820517860), (50, 410258930), (100, 205129465), (113, 181530500), (125, 164103572), (226, 90765250), (250, 82051786), (452, 45382625), (500, 41025893), (565, 36306100), (1130, 18153050), (2260, 9076525), (2825, 7261220), (5650, 3630610), (11300, 1815305), (14125, 1452244), (28250, 726122), (56500, 363061)]