81485860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2311}}^1$

素因数の和:2404

約数の個数: 48

約数和(自身を含む): 179448192

約数和(自身を除く): 97962332

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 820, 860, 1763, 2311, 3526, 4622, 7052, 8815, 9244, 11555, 17630, 23110, 35260, 46220, 94751, 99373, 189502, 198746, 379004, 397492, 473755, 496865, 947510, 993730, 1895020, 1987460, 4074293, 8148586, 16297172, 20371465, 40742930, 81485860]

約数ペア:

[(1, 81485860), (2, 40742930), (4, 20371465), (5, 16297172), (10, 8148586), (20, 4074293), (41, 1987460), (43, 1895020), (82, 993730), (86, 947510), (164, 496865), (172, 473755), (205, 397492), (215, 379004), (410, 198746), (430, 189502), (820, 99373), (860, 94751), (1763, 46220), (2311, 35260), (3526, 23110), (4622, 17630), (7052, 11555), (8815, 9244)]