20387216

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{4409}}^1$

素因数の和:4451

約数の個数: 30

約数和(自身を含む): 41969970

約数和(自身を除く): 21582754

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 289, 578, 1156, 2312, 4409, 4624, 8818, 17636, 35272, 70544, 74953, 149906, 299812, 599624, 1199248, 1274201, 2548402, 5096804, 10193608, 20387216]

約数ペア:

[(1, 20387216), (2, 10193608), (4, 5096804), (8, 2548402), (16, 1274201), (17, 1199248), (34, 599624), (68, 299812), (136, 149906), (272, 74953), (289, 70544), (578, 35272), (1156, 17636), (2312, 8818), (4409, 4624)]