2018982980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{203117}}^1$

素因数の和:203204

約数の個数: 48

約数和(自身を含む): 4913830656

約数和(自身を除く): 2894847676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 203117, 406234, 812468, 1015585, 1421819, 2031170, 2843638, 4062340, 5687276, 7109095, 14218190, 14421307, 28436380, 28842614, 57685228, 72106535, 100949149, 144213070, 201898298, 288426140, 403796596, 504745745, 1009491490, 2018982980]

約数ペア:

[(1, 2018982980), (2, 1009491490), (4, 504745745), (5, 403796596), (7, 288426140), (10, 201898298), (14, 144213070), (20, 100949149), (28, 72106535), (35, 57685228), (70, 28842614), (71, 28436380), (140, 14421307), (142, 14218190), (284, 7109095), (355, 5687276), (497, 4062340), (710, 2843638), (994, 2031170), (1420, 1421819), (1988, 1015585), (2485, 812468), (4970, 406234), (9940, 203117)]