21696454

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{257}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 37449216

約数和(自身を除く): 15752762

約数列:

[1, 2, 13, 17, 26, 34, 191, 221, 257, 382, 442, 514, 2483, 3247, 3341, 4369, 4966, 6494, 6682, 8738, 42211, 49087, 56797, 84422, 98174, 113594, 638131, 834479, 1276262, 1668958, 10848227, 21696454]

約数ペア:

[(1, 21696454), (2, 10848227), (13, 1668958), (17, 1276262), (26, 834479), (34, 638131), (191, 113594), (221, 98174), (257, 84422), (382, 56797), (442, 49087), (514, 42211), (2483, 8738), (3247, 6682), (3341, 6494), (4369, 4966)]