21407548

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{241}}^1\times {\mathrm{419}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 38419920

約数和(自身を除く): 17012372

約数列:

[1, 2, 4, 53, 106, 212, 241, 419, 482, 838, 964, 1676, 12773, 22207, 25546, 44414, 51092, 88828, 100979, 201958, 403916, 5351887, 10703774, 21407548]

約数ペア:

[(1, 21407548), (2, 10703774), (4, 5351887), (53, 403916), (106, 201958), (212, 100979), (241, 88828), (419, 51092), (482, 44414), (838, 25546), (964, 22207), (1676, 12773)]