18999316

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 21643244

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 71, 76, 133, 142, 266, 284, 497, 503, 532, 994, 1006, 1349, 1988, 2012, 2698, 3521, 5396, 7042, 9443, 9557, 14084, 18886, 19114, 35713, 37772, 38228, 66899, 71426, 133798, 142852, 249991, 267596, 499982, 678547, 999964, 1357094, 2714188, 4749829, 9499658, 18999316]

約数ペア:

[(1, 18999316), (2, 9499658), (4, 4749829), (7, 2714188), (14, 1357094), (19, 999964), (28, 678547), (38, 499982), (71, 267596), (76, 249991), (133, 142852), (142, 133798), (266, 71426), (284, 66899), (497, 38228), (503, 37772), (532, 35713), (994, 19114), (1006, 18886), (1349, 14084), (1988, 9557), (2012, 9443), (2698, 7042), (3521, 5396)]