642391173

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 993358080

約数和(自身を除く): 350966907

約数列:

[1, 3, 9, 23, 69, 71, 109, 207, 213, 327, 401, 639, 981, 1203, 1633, 2507, 3609, 4899, 7521, 7739, 9223, 14697, 22563, 23217, 27669, 28471, 43709, 69651, 83007, 85413, 131127, 177997, 256239, 393381, 533991, 654833, 1005307, 1601973, 1964499, 3015921, 3103339, 5893497, 9047763, 9310017, 27930051, 71376797, 214130391, 642391173]

約数ペア:

[(1, 642391173), (3, 214130391), (9, 71376797), (23, 27930051), (69, 9310017), (71, 9047763), (109, 5893497), (207, 3103339), (213, 3015921), (327, 1964499), (401, 1601973), (639, 1005307), (981, 654833), (1203, 533991), (1633, 393381), (2507, 256239), (3609, 177997), (4899, 131127), (7521, 85413), (7739, 83007), (9223, 69651), (14697, 43709), (22563, 28471), (23217, 27669)]