21347816

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{10303}}^1$

素因数の和:10353

約数の個数: 32

約数和(自身を含む): 46986240

約数和(自身を除く): 25638424

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 296, 518, 1036, 2072, 10303, 20606, 41212, 72121, 82424, 144242, 288484, 381211, 576968, 762422, 1524844, 2668477, 3049688, 5336954, 10673908, 21347816]

約数ペア:

[(1, 21347816), (2, 10673908), (4, 5336954), (7, 3049688), (8, 2668477), (14, 1524844), (28, 762422), (37, 576968), (56, 381211), (74, 288484), (148, 144242), (259, 82424), (296, 72121), (518, 41212), (1036, 20606), (2072, 10303)]