81346520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{38371}}^1$

素因数の和:38435

約数の個数: 32

約数和(自身を含む): 186487920

約数和(自身を除く): 105141400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 38371, 76742, 153484, 191855, 306968, 383710, 767420, 1534840, 2033663, 4067326, 8134652, 10168315, 16269304, 20336630, 40673260, 81346520]

約数ペア:

[(1, 81346520), (2, 40673260), (4, 20336630), (5, 16269304), (8, 10168315), (10, 8134652), (20, 4067326), (40, 2033663), (53, 1534840), (106, 767420), (212, 383710), (265, 306968), (424, 191855), (530, 153484), (1060, 76742), (2120, 38371)]