208542080

素因数分解:

$2^7\times 5^1\times {\mathrm{499}}^1\times {\mathrm{653}}^1$

素因数の和:1171

約数の個数: 64

約数和(自身を含む): 500310000

約数和(自身を除く): 291767920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 499, 640, 653, 998, 1306, 1996, 2495, 2612, 3265, 3992, 4990, 5224, 6530, 7984, 9980, 10448, 13060, 15968, 19960, 20896, 26120, 31936, 39920, 41792, 52240, 63872, 79840, 83584, 104480, 159680, 208960, 319360, 325847, 417920, 651694, 1303388, 1629235, 2606776, 3258470, 5213552, 6516940, 10427104, 13033880, 20854208, 26067760, 41708416, 52135520, 104271040, 208542080]

約数ペア:

[(1, 208542080), (2, 104271040), (4, 52135520), (5, 41708416), (8, 26067760), (10, 20854208), (16, 13033880), (20, 10427104), (32, 6516940), (40, 5213552), (64, 3258470), (80, 2606776), (128, 1629235), (160, 1303388), (320, 651694), (499, 417920), (640, 325847), (653, 319360), (998, 208960), (1306, 159680), (1996, 104480), (2495, 83584), (2612, 79840), (3265, 63872), (3992, 52240), (4990, 41792), (5224, 39920), (6530, 31936), (7984, 26120), (9980, 20896), (10448, 19960), (13060, 15968)]