21106701

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 40903200

約数和(自身を除く): 19796499

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 49, 57, 63, 77, 99, 133, 147, 171, 209, 229, 231, 399, 441, 539, 627, 687, 693, 931, 1197, 1463, 1603, 1617, 1881, 2061, 2519, 2793, 4351, 4389, 4809, 4851, 7557, 8379, 10241, 11221, 13053, 13167, 14427, 17633, 22671, 30457, 30723, 33663, 39159, 47861, 52899, 91371, 92169, 100989, 123431, 143583, 158697, 213199, 274113, 335027, 370293, 430749, 639597, 1005081, 1110879, 1918791, 2345189, 3015243, 7035567, 21106701]

約数ペア:

[(1, 21106701), (3, 7035567), (7, 3015243), (9, 2345189), (11, 1918791), (19, 1110879), (21, 1005081), (33, 639597), (49, 430749), (57, 370293), (63, 335027), (77, 274113), (99, 213199), (133, 158697), (147, 143583), (171, 123431), (209, 100989), (229, 92169), (231, 91371), (399, 52899), (441, 47861), (539, 39159), (627, 33663), (687, 30723), (693, 30457), (931, 22671), (1197, 17633), (1463, 14427), (1603, 13167), (1617, 13053), (1881, 11221), (2061, 10241), (2519, 8379), (2793, 7557), (4351, 4851), (4389, 4809)]