81121797.000000000

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{17921}}^1$

素因数の和:17947

約数の個数: 112

約数和(自身を含む): 546262560

約数和(自身を除く): 391425120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2880, 4320, 8640, 17921, 35842, 53763, 71684, 89605, 107526, 143368, 161289, 179210, 215052, 268815, 286736, 322578, 358420, 430104, 483867, 537630, 573472, 645156, 716840, 806445, 860208, 967734, 1075260, 1146944, 1290312, 1433680, 1612890, 1720416, 1935468, 2150520, 2419335, 2580624, 2867360, 3225780, 3440832, 3870936, 4301040, 4838670, 5161248, 5734720, 6451560, 7741872, 8602080, 9677340, 10322496, 12903120, 15483744, 17204160, 19354680, 25806240, 30967488, 38709360, 51612480, 77418720, 154837440]

約数ペア:

[(1, 154837440), (2, 77418720), (3, 51612480), (4, 38709360), (5, 30967488), (6, 25806240), (8, 19354680), (9, 17204160), (10, 15483744), (12, 12903120), (15, 10322496), (16, 9677340), (18, 8602080), (20, 7741872), (24, 6451560), (27, 5734720), (30, 5161248), (32, 4838670), (36, 4301040), (40, 3870936), (45, 3440832), (48, 3225780), (54, 2867360), (60, 2580624), (64, 2419335), (72, 2150520), (80, 1935468), (90, 1720416), (96, 1612890), (108, 1433680), (120, 1290312), (135, 1146944), (144, 1075260), (160, 967734), (180, 860208), (192, 806445), (216, 716840), (240, 645156), (270, 573472), (288, 537630), (320, 483867), (360, 430104), (432, 358420), (480, 322578), (540, 286736), (576, 268815), (720, 215052), (864, 179210), (960, 161289), (1080, 143368), (1440, 107526), (1728, 89605), (2160, 71684), (2880, 53763), (4320, 35842), (8640, 17921)]