28420665

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 57286656

約数和(自身を除く): 28865991

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 47, 65, 91, 105, 141, 195, 235, 273, 329, 443, 455, 611, 705, 987, 1329, 1365, 1645, 1833, 2215, 3055, 3101, 4277, 4935, 5759, 6645, 9165, 9303, 12831, 15505, 17277, 20821, 21385, 28795, 40313, 46515, 62463, 64155, 86385, 104105, 120939, 145747, 201565, 270673, 312315, 437241, 604695, 728735, 812019, 1353365, 1894711, 2186205, 4060095, 5684133, 9473555, 28420665]

約数ペア:

[(1, 28420665), (3, 9473555), (5, 5684133), (7, 4060095), (13, 2186205), (15, 1894711), (21, 1353365), (35, 812019), (39, 728735), (47, 604695), (65, 437241), (91, 312315), (105, 270673), (141, 201565), (195, 145747), (235, 120939), (273, 104105), (329, 86385), (443, 64155), (455, 62463), (611, 46515), (705, 40313), (987, 28795), (1329, 21385), (1365, 20821), (1645, 17277), (1833, 15505), (2215, 12831), (3055, 9303), (3101, 9165), (4277, 6645), (4935, 5759)]