20737688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{1097}}^1$

素因数の和:1259

約数の個数: 32

約数和(自身を含む): 41504400

約数和(自身を除く): 20766712

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 139, 278, 556, 1097, 1112, 2194, 2363, 4388, 4726, 8776, 9452, 18649, 18904, 37298, 74596, 149192, 152483, 304966, 609932, 1219864, 2592211, 5184422, 10368844, 20737688]

約数ペア:

[(1, 20737688), (2, 10368844), (4, 5184422), (8, 2592211), (17, 1219864), (34, 609932), (68, 304966), (136, 152483), (139, 149192), (278, 74596), (556, 37298), (1097, 18904), (1112, 18649), (2194, 9452), (2363, 8776), (4388, 4726)]