1290421825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{670349}}^1$

素因数の和:670377

約数の個数: 24

約数和(自身を含む): 1994961600

約数和(自身を除く): 704539775

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 670349, 3351745, 4692443, 7373839, 16758725, 23462215, 36869195, 51616873, 117311075, 184345975, 258084365, 1290421825]

約数ペア:

[(1, 1290421825), (5, 258084365), (7, 184345975), (11, 117311075), (25, 51616873), (35, 36869195), (55, 23462215), (77, 16758725), (175, 7373839), (275, 4692443), (385, 3351745), (1925, 670349)]