81534640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8423}}^1$

素因数の和:8458

約数の個数: 60

約数和(自身を含む): 208392912

約数和(自身を除く): 126858272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2420, 4840, 8423, 9680, 16846, 33692, 42115, 67384, 84230, 92653, 134768, 168460, 185306, 336920, 370612, 463265, 673840, 741224, 926530, 1019183, 1482448, 1853060, 2038366, 3706120, 4076732, 5095915, 7412240, 8153464, 10191830, 16306928, 20383660, 40767320, 81534640]

約数ペア:

[(1, 81534640), (2, 40767320), (4, 20383660), (5, 16306928), (8, 10191830), (10, 8153464), (11, 7412240), (16, 5095915), (20, 4076732), (22, 3706120), (40, 2038366), (44, 1853060), (55, 1482448), (80, 1019183), (88, 926530), (110, 741224), (121, 673840), (176, 463265), (220, 370612), (242, 336920), (440, 185306), (484, 168460), (605, 134768), (880, 92653), (968, 84230), (1210, 67384), (1936, 42115), (2420, 33692), (4840, 16846), (8423, 9680)]