81990818

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{463}}^1$

素因数の和:631

約数の個数: 48

約数和(自身を含む): 155514240

約数和(自身を除く): 73523422

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 139, 182, 278, 463, 637, 926, 973, 1274, 1807, 1946, 3241, 3614, 6019, 6482, 6811, 12038, 12649, 13622, 22687, 25298, 42133, 45374, 64357, 84266, 88543, 128714, 177086, 294931, 450499, 589862, 836641, 900998, 1673282, 3153493, 5856487, 6306986, 11712974, 40995409, 81990818]

約数ペア:

[(1, 81990818), (2, 40995409), (7, 11712974), (13, 6306986), (14, 5856487), (26, 3153493), (49, 1673282), (91, 900998), (98, 836641), (139, 589862), (182, 450499), (278, 294931), (463, 177086), (637, 128714), (926, 88543), (973, 84266), (1274, 64357), (1807, 45374), (1946, 42133), (3241, 25298), (3614, 22687), (6019, 13622), (6482, 12649), (6811, 12038)]