18509508

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 48648600

約数和(自身を除く): 30139092

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 89, 106, 109, 159, 178, 212, 218, 267, 318, 327, 356, 436, 477, 534, 636, 654, 801, 954, 981, 1068, 1308, 1602, 1908, 1962, 3204, 3924, 4717, 5777, 9434, 9701, 11554, 14151, 17331, 18868, 19402, 23108, 28302, 29103, 34662, 38804, 42453, 51993, 56604, 58206, 69324, 84906, 87309, 103986, 116412, 169812, 174618, 207972, 349236, 514153, 1028306, 1542459, 2056612, 3084918, 4627377, 6169836, 9254754, 18509508]

約数ペア:

[(1, 18509508), (2, 9254754), (3, 6169836), (4, 4627377), (6, 3084918), (9, 2056612), (12, 1542459), (18, 1028306), (36, 514153), (53, 349236), (89, 207972), (106, 174618), (109, 169812), (159, 116412), (178, 103986), (212, 87309), (218, 84906), (267, 69324), (318, 58206), (327, 56604), (356, 51993), (436, 42453), (477, 38804), (534, 34662), (636, 29103), (654, 28302), (801, 23108), (954, 19402), (981, 18868), (1068, 17331), (1308, 14151), (1602, 11554), (1908, 9701), (1962, 9434), (3204, 5777), (3924, 4717)]