31988781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 54250560

約数和(自身を除く): 22261779

約数列:

[1, 3, 9, 11, 17, 33, 51, 83, 99, 153, 187, 229, 249, 561, 687, 747, 913, 1411, 1683, 2061, 2519, 2739, 3893, 4233, 7557, 8217, 11679, 12699, 15521, 19007, 22671, 35037, 42823, 46563, 57021, 128469, 139689, 171063, 209077, 323119, 385407, 627231, 969357, 1881693, 2908071, 3554309, 10662927, 31988781]

約数ペア:

[(1, 31988781), (3, 10662927), (9, 3554309), (11, 2908071), (17, 1881693), (33, 969357), (51, 627231), (83, 385407), (99, 323119), (153, 209077), (187, 171063), (229, 139689), (249, 128469), (561, 57021), (687, 46563), (747, 42823), (913, 35037), (1411, 22671), (1683, 19007), (2061, 15521), (2519, 12699), (2739, 11679), (3893, 8217), (4233, 7557)]