21186052

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{257}}^1\times {\mathrm{557}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 38294424

約数和(自身を除く): 17108372

約数列:

[1, 2, 4, 37, 74, 148, 257, 514, 557, 1028, 1114, 2228, 9509, 19018, 20609, 38036, 41218, 82436, 143149, 286298, 572596, 5296513, 10593026, 21186052]

約数ペア:

[(1, 21186052), (2, 10593026), (4, 5296513), (37, 572596), (74, 286298), (148, 143149), (257, 82436), (514, 41218), (557, 38036), (1028, 20609), (1114, 19018), (2228, 9509)]