642135880

素因数分解:

$2^3\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{12853}}^1$

素因数の和:14113

約数の個数: 32

約数和(自身を含む): 1446075000

約数和(自身を除く): 803939120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1249, 2498, 4996, 6245, 9992, 12490, 12853, 24980, 25706, 49960, 51412, 64265, 102824, 128530, 257060, 514120, 16053397, 32106794, 64213588, 80266985, 128427176, 160533970, 321067940, 642135880]

約数ペア:

[(1, 642135880), (2, 321067940), (4, 160533970), (5, 128427176), (8, 80266985), (10, 64213588), (20, 32106794), (40, 16053397), (1249, 514120), (2498, 257060), (4996, 128530), (6245, 102824), (9992, 64265), (12490, 51412), (12853, 49960), (24980, 25706)]