81541825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 112492800

約数和(自身を除く): 30950975

約数列:

[1, 5, 19, 25, 41, 53, 79, 95, 205, 265, 395, 475, 779, 1007, 1025, 1325, 1501, 1975, 2173, 3239, 3895, 4187, 5035, 7505, 10865, 16195, 19475, 20935, 25175, 37525, 41287, 54325, 61541, 79553, 80975, 104675, 171667, 206435, 307705, 397765, 858335, 1032175, 1538525, 1988825, 3261673, 4291675, 16308365, 81541825]

約数ペア:

[(1, 81541825), (5, 16308365), (19, 4291675), (25, 3261673), (41, 1988825), (53, 1538525), (79, 1032175), (95, 858335), (205, 397765), (265, 307705), (395, 206435), (475, 171667), (779, 104675), (1007, 80975), (1025, 79553), (1325, 61541), (1501, 54325), (1975, 41287), (2173, 37525), (3239, 25175), (3895, 20935), (4187, 19475), (5035, 16195), (7505, 10865)]