257067220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127261}}^1$

素因数の和:127371

約数の個数: 24

約数和(自身を含む): 545190408

約数和(自身を除く): 288123188

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 127261, 254522, 509044, 636305, 1272610, 2545220, 12853361, 25706722, 51413444, 64266805, 128533610, 257067220]

約数ペア:

[(1, 257067220), (2, 128533610), (4, 64266805), (5, 51413444), (10, 25706722), (20, 12853361), (101, 2545220), (202, 1272610), (404, 636305), (505, 509044), (1010, 254522), (2020, 127261)]