20698480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{547}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 53817984

約数和(自身を除く): 33119504

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 547, 688, 860, 880, 946, 1094, 1720, 1892, 2188, 2365, 2735, 3440, 3784, 4376, 4730, 5470, 6017, 7568, 8752, 9460, 10940, 12034, 18920, 21880, 23521, 24068, 30085, 37840, 43760, 47042, 48136, 60170, 94084, 96272, 117605, 120340, 188168, 235210, 240680, 258731, 376336, 470420, 481360, 517462, 940840, 1034924, 1293655, 1881680, 2069848, 2587310, 4139696, 5174620, 10349240, 20698480]

約数ペア:

[(1, 20698480), (2, 10349240), (4, 5174620), (5, 4139696), (8, 2587310), (10, 2069848), (11, 1881680), (16, 1293655), (20, 1034924), (22, 940840), (40, 517462), (43, 481360), (44, 470420), (55, 376336), (80, 258731), (86, 240680), (88, 235210), (110, 188168), (172, 120340), (176, 117605), (215, 96272), (220, 94084), (344, 60170), (430, 48136), (440, 47042), (473, 43760), (547, 37840), (688, 30085), (860, 24068), (880, 23521), (946, 21880), (1094, 18920), (1720, 12034), (1892, 10940), (2188, 9460), (2365, 8752), (2735, 7568), (3440, 6017), (3784, 5470), (4376, 4730)]