81478404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{367}}^1\times {\mathrm{881}}^1$

素因数の和:1265

約数の個数: 72

約数和(自身を含む): 236291328

約数和(自身を除く): 154812924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 367, 734, 881, 1101, 1468, 1762, 2202, 2569, 2643, 3303, 3524, 4404, 5138, 5286, 6167, 6606, 7707, 7929, 10276, 10572, 12334, 13212, 15414, 15858, 18501, 23121, 24668, 30828, 31716, 37002, 46242, 55503, 74004, 92484, 111006, 222012, 323327, 646654, 969981, 1293308, 1939962, 2263289, 2909943, 3879924, 4526578, 5819886, 6789867, 9053156, 11639772, 13579734, 20369601, 27159468, 40739202, 81478404]

約数ペア:

[(1, 81478404), (2, 40739202), (3, 27159468), (4, 20369601), (6, 13579734), (7, 11639772), (9, 9053156), (12, 6789867), (14, 5819886), (18, 4526578), (21, 3879924), (28, 2909943), (36, 2263289), (42, 1939962), (63, 1293308), (84, 969981), (126, 646654), (252, 323327), (367, 222012), (734, 111006), (881, 92484), (1101, 74004), (1468, 55503), (1762, 46242), (2202, 37002), (2569, 31716), (2643, 30828), (3303, 24668), (3524, 23121), (4404, 18501), (5138, 15858), (5286, 15414), (6167, 13212), (6606, 12334), (7707, 10572), (7929, 10276)]