399088641

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1\times {\mathrm{601}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 617064448

約数和(自身を除く): 217975807

約数列:

[1, 3, 7, 21, 103, 307, 309, 601, 721, 921, 1803, 2149, 2163, 4207, 6447, 12621, 31621, 61903, 94863, 184507, 185709, 221347, 433321, 553521, 664041, 1291549, 1299963, 3874647, 19004221, 57012663, 133029547, 399088641]

約数ペア:

[(1, 399088641), (3, 133029547), (7, 57012663), (21, 19004221), (103, 3874647), (307, 1299963), (309, 1291549), (601, 664041), (721, 553521), (921, 433321), (1803, 221347), (2149, 185709), (2163, 184507), (4207, 94863), (6447, 61903), (12621, 31621)]