21147756

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{929}}^1$

素因数の和:1214

約数の個数: 48

約数和(自身を含む): 56663040

約数和(自身を除く): 35515284

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 271, 542, 813, 929, 1084, 1626, 1858, 1897, 2787, 3252, 3716, 3794, 5574, 5691, 6503, 7588, 11148, 11382, 13006, 19509, 22764, 26012, 39018, 78036, 251759, 503518, 755277, 1007036, 1510554, 1762313, 3021108, 3524626, 5286939, 7049252, 10573878, 21147756]

約数ペア:

[(1, 21147756), (2, 10573878), (3, 7049252), (4, 5286939), (6, 3524626), (7, 3021108), (12, 1762313), (14, 1510554), (21, 1007036), (28, 755277), (42, 503518), (84, 251759), (271, 78036), (542, 39018), (813, 26012), (929, 22764), (1084, 19509), (1626, 13006), (1858, 11382), (1897, 11148), (2787, 7588), (3252, 6503), (3716, 5691), (3794, 5574)]