20563263

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16127937

約数列:

[1, 3, 7, 9, 19, 21, 41, 57, 63, 123, 133, 171, 287, 369, 399, 419, 779, 861, 1197, 1257, 2337, 2583, 2933, 3771, 5453, 7011, 7961, 8799, 16359, 17179, 23883, 26397, 49077, 51537, 55727, 71649, 120253, 154611, 167181, 326401, 360759, 501543, 979203, 1082277, 2284807, 2937609, 6854421, 20563263]

約数ペア:

[(1, 20563263), (3, 6854421), (7, 2937609), (9, 2284807), (19, 1082277), (21, 979203), (41, 501543), (57, 360759), (63, 326401), (123, 167181), (133, 154611), (171, 120253), (287, 71649), (369, 55727), (399, 51537), (419, 49077), (779, 26397), (861, 23883), (1197, 17179), (1257, 16359), (2337, 8799), (2583, 7961), (2933, 7011), (3771, 5453)]