20712978

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{619}}^1$

素因数の和:664

約数の個数: 72

約数和(自身を含む): 53099280

約数和(自身を除く): 32386302

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 26, 33, 39, 66, 78, 99, 117, 143, 169, 198, 234, 286, 338, 429, 507, 619, 858, 1014, 1238, 1287, 1521, 1857, 1859, 2574, 3042, 3714, 3718, 5571, 5577, 6809, 8047, 11142, 11154, 13618, 16094, 16731, 20427, 24141, 33462, 40854, 48282, 61281, 72423, 88517, 104611, 122562, 144846, 177034, 209222, 265551, 313833, 531102, 627666, 796653, 941499, 1150721, 1593306, 1882998, 2301442, 3452163, 6904326, 10356489, 20712978]

約数ペア:

[(1, 20712978), (2, 10356489), (3, 6904326), (6, 3452163), (9, 2301442), (11, 1882998), (13, 1593306), (18, 1150721), (22, 941499), (26, 796653), (33, 627666), (39, 531102), (66, 313833), (78, 265551), (99, 209222), (117, 177034), (143, 144846), (169, 122562), (198, 104611), (234, 88517), (286, 72423), (338, 61281), (429, 48282), (507, 40854), (619, 33462), (858, 24141), (1014, 20427), (1238, 16731), (1287, 16094), (1521, 13618), (1857, 11154), (1859, 11142), (2574, 8047), (3042, 6809), (3714, 5577), (3718, 5571)]