18531135

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 37177920

約数和(自身を除く): 18646785

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 89, 105, 267, 315, 445, 623, 661, 801, 1335, 1869, 1983, 3115, 3305, 4005, 4627, 5607, 5949, 9345, 9915, 13881, 23135, 28035, 29745, 41643, 58829, 69405, 176487, 208215, 294145, 411803, 529461, 882435, 1235409, 2059015, 2647305, 3706227, 6177045, 18531135]

約数ペア:

[(1, 18531135), (3, 6177045), (5, 3706227), (7, 2647305), (9, 2059015), (15, 1235409), (21, 882435), (35, 529461), (45, 411803), (63, 294145), (89, 208215), (105, 176487), (267, 69405), (315, 58829), (445, 41643), (623, 29745), (661, 28035), (801, 23135), (1335, 13881), (1869, 9915), (1983, 9345), (3115, 5949), (3305, 5607), (4005, 4627)]