18226472

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 21354328

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 121, 152, 209, 242, 418, 484, 836, 968, 991, 1672, 1982, 2299, 3964, 4598, 7928, 9196, 10901, 18392, 18829, 21802, 37658, 43604, 75316, 87208, 119911, 150632, 207119, 239822, 414238, 479644, 828476, 959288, 1656952, 2278309, 4556618, 9113236, 18226472]

約数ペア:

[(1, 18226472), (2, 9113236), (4, 4556618), (8, 2278309), (11, 1656952), (19, 959288), (22, 828476), (38, 479644), (44, 414238), (76, 239822), (88, 207119), (121, 150632), (152, 119911), (209, 87208), (242, 75316), (418, 43604), (484, 37658), (836, 21802), (968, 18829), (991, 18392), (1672, 10901), (1982, 9196), (2299, 7928), (3964, 4598)]