20540420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60413}}^1$

素因数の和:60439

約数の個数: 24

約数和(自身を含む): 45672984

約数和(自身を除く): 25132564

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60413, 120826, 241652, 302065, 604130, 1027021, 1208260, 2054042, 4108084, 5135105, 10270210, 20540420]

約数ペア:

[(1, 20540420), (2, 10270210), (4, 5135105), (5, 4108084), (10, 2054042), (17, 1208260), (20, 1027021), (34, 604130), (68, 302065), (85, 241652), (170, 120826), (340, 60413)]