208705880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{883}}^1$

素因数の和:1224

約数の個数: 64

約数和(自身を含む): 496454400

約数和(自身を除く): 287748520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 311, 380, 622, 760, 883, 1244, 1555, 1766, 2488, 3110, 3532, 4415, 5909, 6220, 7064, 8830, 11818, 12440, 16777, 17660, 23636, 29545, 33554, 35320, 47272, 59090, 67108, 83885, 118180, 134216, 167770, 236360, 274613, 335540, 549226, 671080, 1098452, 1373065, 2196904, 2746130, 5217647, 5492260, 10435294, 10984520, 20870588, 26088235, 41741176, 52176470, 104352940, 208705880]

約数ペア:

[(1, 208705880), (2, 104352940), (4, 52176470), (5, 41741176), (8, 26088235), (10, 20870588), (19, 10984520), (20, 10435294), (38, 5492260), (40, 5217647), (76, 2746130), (95, 2196904), (152, 1373065), (190, 1098452), (311, 671080), (380, 549226), (622, 335540), (760, 274613), (883, 236360), (1244, 167770), (1555, 134216), (1766, 118180), (2488, 83885), (3110, 67108), (3532, 59090), (4415, 47272), (5909, 35320), (6220, 33554), (7064, 29545), (8830, 23636), (11818, 17660), (12440, 16777)]