20416095

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 42254784

約数和(自身を除く): 21838689

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 49, 63, 105, 141, 147, 197, 235, 245, 315, 329, 423, 441, 591, 705, 735, 985, 987, 1379, 1645, 1773, 2115, 2205, 2303, 2955, 2961, 4137, 4935, 6895, 6909, 8865, 9259, 9653, 11515, 12411, 14805, 20685, 20727, 27777, 28959, 34545, 46295, 48265, 62055, 64813, 83331, 86877, 103635, 138885, 144795, 194439, 324065, 416655, 434385, 453691, 583317, 972195, 1361073, 2268455, 2916585, 4083219, 6805365, 20416095]

約数ペア:

[(1, 20416095), (3, 6805365), (5, 4083219), (7, 2916585), (9, 2268455), (15, 1361073), (21, 972195), (35, 583317), (45, 453691), (47, 434385), (49, 416655), (63, 324065), (105, 194439), (141, 144795), (147, 138885), (197, 103635), (235, 86877), (245, 83331), (315, 64813), (329, 62055), (423, 48265), (441, 46295), (591, 34545), (705, 28959), (735, 27777), (985, 20727), (987, 20685), (1379, 14805), (1645, 12411), (1773, 11515), (2115, 9653), (2205, 9259), (2303, 8865), (2955, 6909), (2961, 6895), (4137, 4935)]