20132440

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 47496960

約数和(自身を除く): 27364520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 223, 244, 296, 305, 370, 446, 488, 610, 740, 892, 1115, 1220, 1480, 1784, 2230, 2257, 2440, 4460, 4514, 8251, 8920, 9028, 11285, 13603, 16502, 18056, 22570, 27206, 33004, 41255, 45140, 54412, 66008, 68015, 82510, 90280, 108824, 136030, 165020, 272060, 330040, 503311, 544120, 1006622, 2013244, 2516555, 4026488, 5033110, 10066220, 20132440]

約数ペア:

[(1, 20132440), (2, 10066220), (4, 5033110), (5, 4026488), (8, 2516555), (10, 2013244), (20, 1006622), (37, 544120), (40, 503311), (61, 330040), (74, 272060), (122, 165020), (148, 136030), (185, 108824), (223, 90280), (244, 82510), (296, 68015), (305, 66008), (370, 54412), (446, 45140), (488, 41255), (610, 33004), (740, 27206), (892, 22570), (1115, 18056), (1220, 16502), (1480, 13603), (1784, 11285), (2230, 9028), (2257, 8920), (2440, 8251), (4460, 4514)]