20154564340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{225493}}^1$

素因数の和:225652

約数の個数: 48

約数和(自身を含む): 43754855760

約数和(自身を除く): 23600291420

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 820, 1090, 2180, 4469, 8938, 17876, 22345, 44690, 89380, 225493, 450986, 901972, 1127465, 2254930, 4509860, 9245213, 18490426, 24578737, 36980852, 46226065, 49157474, 92452130, 98314948, 122893685, 184904260, 245787370, 491574740, 1007728217, 2015456434, 4030912868, 5038641085, 10077282170, 20154564340]

約数ペア:

[(1, 20154564340), (2, 10077282170), (4, 5038641085), (5, 4030912868), (10, 2015456434), (20, 1007728217), (41, 491574740), (82, 245787370), (109, 184904260), (164, 122893685), (205, 98314948), (218, 92452130), (410, 49157474), (436, 46226065), (545, 36980852), (820, 24578737), (1090, 18490426), (2180, 9245213), (4469, 4509860), (8938, 2254930), (17876, 1127465), (22345, 901972), (44690, 450986), (89380, 225493)]