18921222

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 25315578

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 89, 93, 127, 178, 186, 254, 267, 279, 381, 534, 558, 762, 801, 837, 1143, 1602, 1674, 2286, 2403, 2759, 3429, 3937, 4806, 5518, 6858, 7874, 8277, 11303, 11811, 16554, 22606, 23622, 24831, 33909, 35433, 49662, 67818, 70866, 74493, 101727, 106299, 148986, 203454, 212598, 305181, 350393, 610362, 700786, 1051179, 2102358, 3153537, 6307074, 9460611, 18921222]

約数ペア:

[(1, 18921222), (2, 9460611), (3, 6307074), (6, 3153537), (9, 2102358), (18, 1051179), (27, 700786), (31, 610362), (54, 350393), (62, 305181), (89, 212598), (93, 203454), (127, 148986), (178, 106299), (186, 101727), (254, 74493), (267, 70866), (279, 67818), (381, 49662), (534, 35433), (558, 33909), (762, 24831), (801, 23622), (837, 22606), (1143, 16554), (1602, 11811), (1674, 11303), (2286, 8277), (2403, 7874), (2759, 6858), (3429, 5518), (3937, 4806)]