81463040

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2053}}^1$

素因数の和:2105

約数の個数: 72

約数和(自身を含む): 201522048

約数和(自身を除く): 120059008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2053, 2480, 3968, 4106, 4960, 7936, 8212, 9920, 10265, 16424, 19840, 20530, 32848, 39680, 41060, 63643, 65696, 82120, 127286, 131392, 164240, 254572, 262784, 318215, 328480, 509144, 525568, 636430, 656960, 1018288, 1272860, 1313920, 2036576, 2545720, 2627840, 4073152, 5091440, 8146304, 10182880, 16292608, 20365760, 40731520, 81463040]

約数ペア:

[(1, 81463040), (2, 40731520), (4, 20365760), (5, 16292608), (8, 10182880), (10, 8146304), (16, 5091440), (20, 4073152), (31, 2627840), (32, 2545720), (40, 2036576), (62, 1313920), (64, 1272860), (80, 1018288), (124, 656960), (128, 636430), (155, 525568), (160, 509144), (248, 328480), (256, 318215), (310, 262784), (320, 254572), (496, 164240), (620, 131392), (640, 127286), (992, 82120), (1240, 65696), (1280, 63643), (1984, 41060), (2053, 39680), (2480, 32848), (3968, 20530), (4106, 19840), (4960, 16424), (7936, 10265), (8212, 9920)]