81880960

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{373}}^1$

素因数の和:413

約数の個数: 128

約数和(自身を含む): 228888000

約数和(自身を除く): 147007040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 343, 373, 392, 448, 490, 560, 640, 686, 746, 784, 896, 980, 1120, 1372, 1492, 1568, 1715, 1865, 1960, 2240, 2611, 2744, 2984, 3136, 3430, 3730, 3920, 4480, 5222, 5488, 5968, 6272, 6860, 7460, 7840, 10444, 10976, 11936, 13055, 13720, 14920, 15680, 18277, 20888, 21952, 23872, 26110, 27440, 29840, 31360, 36554, 41776, 43904, 47744, 52220, 54880, 59680, 73108, 83552, 91385, 104440, 109760, 119360, 127939, 146216, 167104, 182770, 208880, 219520, 238720, 255878, 292432, 334208, 365540, 417760, 511756, 584864, 639695, 731080, 835520, 1023512, 1169728, 1279390, 1462160, 1671040, 2047024, 2339456, 2558780, 2924320, 4094048, 5117560, 5848640, 8188096, 10235120, 11697280, 16376192, 20470240, 40940480, 81880960]

約数ペア:

[(1, 81880960), (2, 40940480), (4, 20470240), (5, 16376192), (7, 11697280), (8, 10235120), (10, 8188096), (14, 5848640), (16, 5117560), (20, 4094048), (28, 2924320), (32, 2558780), (35, 2339456), (40, 2047024), (49, 1671040), (56, 1462160), (64, 1279390), (70, 1169728), (80, 1023512), (98, 835520), (112, 731080), (128, 639695), (140, 584864), (160, 511756), (196, 417760), (224, 365540), (245, 334208), (280, 292432), (320, 255878), (343, 238720), (373, 219520), (392, 208880), (448, 182770), (490, 167104), (560, 146216), (640, 127939), (686, 119360), (746, 109760), (784, 104440), (896, 91385), (980, 83552), (1120, 73108), (1372, 59680), (1492, 54880), (1568, 52220), (1715, 47744), (1865, 43904), (1960, 41776), (2240, 36554), (2611, 31360), (2744, 29840), (2984, 27440), (3136, 26110), (3430, 23872), (3730, 21952), (3920, 20888), (4480, 18277), (5222, 15680), (5488, 14920), (5968, 13720), (6272, 13055), (6860, 11936), (7460, 10976), (7840, 10444)]