2161640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4157}}^1$

素因数の和:4181

約数の個数: 32

約数和(自身を含む): 5239080

約数和(自身を除く): 3077440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 4157, 8314, 16628, 20785, 33256, 41570, 54041, 83140, 108082, 166280, 216164, 270205, 432328, 540410, 1080820, 2161640]

約数ペア:

[(1, 2161640), (2, 1080820), (4, 540410), (5, 432328), (8, 270205), (10, 216164), (13, 166280), (20, 108082), (26, 83140), (40, 54041), (52, 41570), (65, 33256), (104, 20785), (130, 16628), (260, 8314), (520, 4157)]