20173185

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 38361600

約数和(自身を除く): 18188415

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 73, 89, 115, 135, 207, 219, 267, 345, 365, 445, 621, 657, 801, 1035, 1095, 1335, 1679, 1971, 2047, 2403, 3105, 3285, 4005, 5037, 6141, 6497, 8395, 9855, 10235, 12015, 15111, 18423, 19491, 25185, 30705, 32485, 45333, 55269, 58473, 75555, 92115, 97455, 149431, 175419, 226665, 276345, 292365, 448293, 747155, 877095, 1344879, 2241465, 4034637, 6724395, 20173185]

約数ペア:

[(1, 20173185), (3, 6724395), (5, 4034637), (9, 2241465), (15, 1344879), (23, 877095), (27, 747155), (45, 448293), (69, 292365), (73, 276345), (89, 226665), (115, 175419), (135, 149431), (207, 97455), (219, 92115), (267, 75555), (345, 58473), (365, 55269), (445, 45333), (621, 32485), (657, 30705), (801, 25185), (1035, 19491), (1095, 18423), (1335, 15111), (1679, 12015), (1971, 10235), (2047, 9855), (2403, 8395), (3105, 6497), (3285, 6141), (4005, 5037)]