20840028

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:323

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 37075620

約数列:

[1, 2, 3, 4, 6, 11, 12, 17, 22, 33, 34, 37, 44, 51, 66, 68, 74, 102, 111, 132, 148, 187, 204, 222, 251, 374, 407, 444, 502, 561, 629, 748, 753, 814, 1004, 1122, 1221, 1258, 1506, 1628, 1887, 2244, 2442, 2516, 2761, 3012, 3774, 4267, 4884, 5522, 6919, 7548, 8283, 8534, 9287, 11044, 12801, 13838, 16566, 17068, 18574, 20757, 25602, 27676, 27861, 33132, 37148, 41514, 46937, 51204, 55722, 83028, 93874, 102157, 111444, 140811, 157879, 187748, 204314, 281622, 306471, 315758, 408628, 473637, 563244, 612942, 631516, 947274, 1225884, 1736669, 1894548, 3473338, 5210007, 6946676, 10420014, 20840028]

約数ペア:

[(1, 20840028), (2, 10420014), (3, 6946676), (4, 5210007), (6, 3473338), (11, 1894548), (12, 1736669), (17, 1225884), (22, 947274), (33, 631516), (34, 612942), (37, 563244), (44, 473637), (51, 408628), (66, 315758), (68, 306471), (74, 281622), (102, 204314), (111, 187748), (132, 157879), (148, 140811), (187, 111444), (204, 102157), (222, 93874), (251, 83028), (374, 55722), (407, 51204), (444, 46937), (502, 41514), (561, 37148), (629, 33132), (748, 27861), (753, 27676), (814, 25602), (1004, 20757), (1122, 18574), (1221, 17068), (1258, 16566), (1506, 13838), (1628, 12801), (1887, 11044), (2244, 9287), (2442, 8534), (2516, 8283), (2761, 7548), (3012, 6919), (3774, 5522), (4267, 4884)]