21129514

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:462

約数の個数: 32

約数和(自身を含む): 37521792

約数和(自身を除く): 16392278

約数列:

[1, 2, 7, 14, 41, 82, 131, 262, 281, 287, 562, 574, 917, 1834, 1967, 3934, 5371, 10742, 11521, 23042, 36811, 37597, 73622, 75194, 80647, 161294, 257677, 515354, 1509251, 3018502, 10564757, 21129514]

約数ペア:

[(1, 21129514), (2, 10564757), (7, 3018502), (14, 1509251), (41, 515354), (82, 257677), (131, 161294), (262, 80647), (281, 75194), (287, 73622), (562, 37597), (574, 36811), (917, 23042), (1834, 11521), (1967, 10742), (3934, 5371)]