20690826

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 47308800

約数和(自身を除く): 26617974

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 43, 62, 78, 86, 93, 129, 186, 199, 258, 398, 403, 559, 597, 806, 1118, 1194, 1209, 1333, 1677, 2418, 2587, 2666, 3354, 3999, 5174, 6169, 7761, 7998, 8557, 12338, 15522, 17114, 17329, 18507, 25671, 34658, 37014, 51342, 51987, 80197, 103974, 111241, 160394, 222482, 240591, 265267, 333723, 481182, 530534, 667446, 795801, 1591602, 3448471, 6896942, 10345413, 20690826]

約数ペア:

[(1, 20690826), (2, 10345413), (3, 6896942), (6, 3448471), (13, 1591602), (26, 795801), (31, 667446), (39, 530534), (43, 481182), (62, 333723), (78, 265267), (86, 240591), (93, 222482), (129, 160394), (186, 111241), (199, 103974), (258, 80197), (398, 51987), (403, 51342), (559, 37014), (597, 34658), (806, 25671), (1118, 18507), (1194, 17329), (1209, 17114), (1333, 15522), (1677, 12338), (2418, 8557), (2587, 7998), (2666, 7761), (3354, 6169), (3999, 5174)]