654418640

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1\times {\mathrm{907}}^1$

素因数の和:1260

約数の個数: 80

約数和(自身を含む): 1580791680

約数和(自身を除く): 926373040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 311, 464, 580, 622, 907, 1160, 1244, 1555, 1814, 2320, 2488, 3110, 3628, 4535, 4976, 6220, 7256, 9019, 9070, 12440, 14512, 18038, 18140, 24880, 26303, 36076, 36280, 45095, 52606, 72152, 72560, 90190, 105212, 131515, 144304, 180380, 210424, 263030, 282077, 360760, 420848, 526060, 564154, 721520, 1052120, 1128308, 1410385, 2104240, 2256616, 2820770, 4513232, 5641540, 8180233, 11283080, 16360466, 22566160, 32720932, 40901165, 65441864, 81802330, 130883728, 163604660, 327209320, 654418640]

約数ペア:

[(1, 654418640), (2, 327209320), (4, 163604660), (5, 130883728), (8, 81802330), (10, 65441864), (16, 40901165), (20, 32720932), (29, 22566160), (40, 16360466), (58, 11283080), (80, 8180233), (116, 5641540), (145, 4513232), (232, 2820770), (290, 2256616), (311, 2104240), (464, 1410385), (580, 1128308), (622, 1052120), (907, 721520), (1160, 564154), (1244, 526060), (1555, 420848), (1814, 360760), (2320, 282077), (2488, 263030), (3110, 210424), (3628, 180380), (4535, 144304), (4976, 131515), (6220, 105212), (7256, 90190), (9019, 72560), (9070, 72152), (12440, 52606), (14512, 45095), (18038, 36280), (18140, 36076), (24880, 26303)]