1640684188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^2\times {\mathrm{569}}^1$

素因数の和:739

約数の個数: 72

約数和(自身を含む): 3427346160

約数和(自身を除く): 1786661972

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 569, 572, 781, 923, 1138, 1562, 1846, 2276, 3124, 3692, 5041, 6259, 7397, 10082, 10153, 12518, 14794, 20164, 20306, 25036, 29588, 40399, 40612, 55451, 65533, 80798, 81367, 110902, 131066, 161596, 162734, 221804, 262132, 325468, 444389, 525187, 720863, 888778, 1050374, 1441726, 1777556, 2100748, 2868329, 2883452, 5736658, 5777057, 11473316, 11554114, 23108228, 31551619, 37288277, 63103238, 74576554, 126206476, 149153108, 410171047, 820342094, 1640684188]

約数ペア:

[(1, 1640684188), (2, 820342094), (4, 410171047), (11, 149153108), (13, 126206476), (22, 74576554), (26, 63103238), (44, 37288277), (52, 31551619), (71, 23108228), (142, 11554114), (143, 11473316), (284, 5777057), (286, 5736658), (569, 2883452), (572, 2868329), (781, 2100748), (923, 1777556), (1138, 1441726), (1562, 1050374), (1846, 888778), (2276, 720863), (3124, 525187), (3692, 444389), (5041, 325468), (6259, 262132), (7397, 221804), (10082, 162734), (10153, 161596), (12518, 131066), (14794, 110902), (20164, 81367), (20306, 80798), (25036, 65533), (29588, 55451), (40399, 40612)]